0001437749-22-019379 | 10-Q | XBRL Viewer

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Document And Entity Information - shares	6 Months Ended
Document And Entity Information - shares	Jun. 30, 2022	Aug. 01, 2022
Document Information [Line Items]
Entity Central Index Key	0001107843
Entity Registrant Name	QUALYS, INC.
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2022
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2022
Document Transition Report	false
Entity File Number	001-35662
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0534145
Entity Address, Address Line One	919 E. Hillsdale Boulevard, 4th Floor
Entity Address, City or Town	Foster City
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94404
City Area Code	650
Local Phone Number	801-6100
Title of 12(b) Security	Common stock, $0.001 par value per share
Trading Symbol	QLYS
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		38,363,617

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 120,965	$ 137,328
Short-term marketable securities	298,124	267,960
Accounts receivable, net of allowance of $978 and $793 as of June 30, 2022 and December 31, 2021, respectively	97,692	108,998
Prepaid expenses and other current assets	34,959	32,112
Total current assets	551,740	546,398
Long-term marketable securities	80,122	111,198
Property and equipment, net	57,830	61,854
Operating leases - right of use asset	33,451	37,016
Deferred tax assets, net	35,426	25,087
Intangible assets, net	3,365	6,545
Goodwill	7,447	7,447
Restricted cash	1,200	1,200
Other noncurrent assets	18,430	17,814
Total assets	789,011	814,559
Current liabilities:
Accounts payable	2,132	1,296
Accrued liabilities	37,987	32,504
Deferred revenues, current	275,725	257,872
Operating lease liabilities, current	11,545	12,608
Total current liabilities	327,389	304,280
Deferred revenues, noncurrent	28,358	32,753
Operating lease liabilities, noncurrent	31,335	35,914
Other noncurrent liabilities	5,091	4,898
Total liabilities	392,173	377,845
Commitments and contingencies (Note 8)
Stockholders’ equity:
Preferred stock, $0.001 par value; 20,000 shares authorized, no shares issued and outstanding at June 30, 2022 and December 31, 2021	0	0
Common stock, $0.001 par value; 1,000,000 shares authorized; 38,517 and 39,112 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	39	39
Additional paid-in capital	493,725	477,323
Accumulated other comprehensive income (loss)	(625)	1,007
Accumulated deficit	(96,301)	(41,655)
Total stockholders’ equity	396,838	436,714
Total liabilities and stockholders’ equity	$ 789,011	$ 814,559

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Allowance for doubtful accounts receivable	$ 978	$ 793
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	20,000	20,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par or stated value per share (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	1,000,000	1,000,000
Common stock, shares issued (in shares)	38,517	39,112
Common stock, shares outstanding (in shares)	38,517	39,112

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues	$ 119,893	$ 99,702	$ 233,313	$ 196,458
Cost of revenues	25,046	21,552	49,048	43,232
Gross profit	94,847	78,150	184,265	153,226
Operating expenses:
Research and development	24,791	19,805	47,898	37,554
Sales and marketing	23,730	17,770	43,872	35,759
General and administrative	13,333	11,213	25,967	53,256
Total operating expenses	61,854	48,788	117,737	126,569
Income from operations	32,993	29,362	66,528	26,657
Other income (expense), net:
Interest expense	0	0	0	(4)
Interest income	839	567	1,357	1,313
Other income (expense), net	(1,710)	(80)	(2,420)	(324)
Total other income (expense), net	(871)	487	(1,063)	985
Income before income taxes	32,122	29,849	65,465	27,642
Income tax provision	5,526	8,707	13,459	6,272
Net income	$ 26,596	$ 21,142	$ 52,006	$ 21,370
Net income per share:
Basic (in dollars per share)	$ 0.69	$ 0.54	$ 1.34	$ 0.55
Diluted (in dollars per share)	$ 0.67	$ 0.53	$ 1.31	$ 0.53
Weighted average shares used in computing net income per share:
Basic (in shares)	38,738	39,099	38,864	39,154
Diluted (in shares)	39,689	40,077	39,844	40,253

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net income	$ 26,596	$ 21,142	$ 52,006	$ 21,370
Other comprehensive income (loss), net of tax
Net change in unrealized losses on available-for-sale debt securities, net of tax	(933)	(202)	(3,061)	(591)
Net change in unrealized gains on cash flow hedges, net of tax	978	(183)	1,429	810
Other comprehensive income (loss), net of tax	45	(385)	(1,632)	219
Comprehensive income	$ 26,641	$ 20,757	$ 50,374	$ 21,589

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flow from operating activities:
Net income	$ 52,006	$ 21,370
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	17,552	17,869
Bad debt expense	297	152
Loss on disposal of property and equipment	5	12
Stock-based compensation	24,565	46,755
Amortization of premiums on marketable securities	1,158	2,029
Deferred income taxes	(10,861)	(722)
Changes in operating assets and liabilities:
Accounts receivable	11,009	13,983
Prepaid expenses and other assets	(1,085)	(6,014)
Accounts payable	917	947
Accrued liabilities	3,830	3,032
Deferred revenues	13,458	12,827
Net cash provided by operating activities	112,851	112,240
Cash flow from investing activities:
Purchases of marketable securities	(177,171)	(201,411)
Sales and maturities of marketable securities	173,922	205,143
Purchases of property and equipment	(11,150)	(12,911)
Proceeds from disposal of property and equipment	0	6
Net cash used in investing activities	(14,399)	(9,173)
Cash flow from financing activities:
Repurchases of common stock	(117,813)	(63,252)
Proceeds from exercise of stock options	9,073	4,438
Payments for taxes related to net share settlement of equity awards	(8,161)	(21,017)
Proceeds from issuance of common stock through employee stock purchase plan	2,086	0
Principal payments under finance lease obligations	0	(90)
Net cash used in financing activities	(114,815)	(79,921)
Net increase (decrease) in cash, cash equivalents and restricted cash	(16,363)	23,146
Cash, cash equivalents and restricted cash at beginning of period	138,528	75,332
Cash, cash equivalents and restricted cash at end of period	$ 122,165	$ 98,478

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
shares in Thousands, $ in Thousands

Common Stock [Member]

Additional Paid-in Capital [Member]

AOCI Attributable to Parent [Member]

Retained Earnings [Member]

Total

Balances (in shares) at Dec. 31, 2020

39,253

Balance at Dec. 31, 2020

$ 39

$ 401,359

$ (484)

$ 3,568

$ 404,482

Net income

228

Other comprehensive income (loss), net of tax

$ 0

604

Issuance of common stock upon exercise of stock options (in shares)

Issuance of common stock upon exercise of stock options

$ 0

2,264

Repurchase of common stock (in shares)

(269)

Repurchase of common stock

$ 0

(3,232)

(27,797)

(31,029)

Issuance of common stock upon vesting of restricted stock units (in shares)

305

Issuance of common stock upon vesting of restricted stock units

$ 0

(155)

$ 0

(17,643)

Stock-based compensation

$ 0

38,202

Balances (in shares) at Mar. 31, 2021

39,203

Balance at Mar. 31, 2021

$ 39

420,950

120

(24,001)

397,108

Balances (in shares) at Dec. 31, 2020

39,253

Balance at Dec. 31, 2020

$ 39

401,359

(484)

3,568

404,482

Net income

21,370

Other comprehensive income (loss), net of tax

219

Balances (in shares) at Jun. 30, 2021

38,995

Balance at Jun. 30, 2021

$ 39

424,507

(265)

(31,286)

392,995

Balances (in shares) at Mar. 31, 2021

39,203

Balance at Mar. 31, 2021

$ 39

420,950

120

(24,001)

397,108

Net income

21,142

Other comprehensive income (loss), net of tax

$ 0

(385)

Issuance of common stock upon exercise of stock options (in shares)

Issuance of common stock upon exercise of stock options

$ 0

2,174

Repurchase of common stock (in shares)

(316)

Repurchase of common stock

$ 0

(3,796)

(28,427)

(32,223)

Issuance of common stock upon vesting of restricted stock units (in shares)

Issuance of common stock upon vesting of restricted stock units

$ 0

(33)

$ 0

(3,374)

Stock-based compensation

$ 0

8,553

Balances (in shares) at Jun. 30, 2021

38,995

Balance at Jun. 30, 2021

$ 39

424,507

(265)

(31,286)

392,995

Balances (in shares) at Dec. 31, 2021

39,112

Balance at Dec. 31, 2021

$ 39

477,323

1,007

(41,655)

436,714

Net income

25,410

Other comprehensive income (loss), net of tax

$ 0

(1,677)

Issuance of common stock upon exercise of stock options (in shares)

Issuance of common stock upon exercise of stock options

$ 0

2,569

Repurchase of common stock (in shares)

(368)

Repurchase of common stock

$ 0

(4,416)

(42,165)

(46,581)

Issuance of common stock upon vesting of restricted stock units (in shares)

Issuance of common stock upon vesting of restricted stock units

$ 0

(28)

$ 0

(3,631)

Issuance of common stock through employee stock purchase plan (in shares)

Issuance of common stock through employee stock purchase plan

2,086

Stock-based compensation

$ 0

11,745

Balances (in shares) at Mar. 31, 2022

38,875

Balance at Mar. 31, 2022

$ 39

485,676

(670)

(58,410)

426,635

Balances (in shares) at Dec. 31, 2021

39,112

Balance at Dec. 31, 2021

$ 39

477,323

1,007

(41,655)

436,714

Net income

52,006

Other comprehensive income (loss), net of tax

$ (1,632)

Issuance of common stock upon exercise of stock options (in shares)

^[1]

212

Balances (in shares) at Jun. 30, 2022

38,517

Balance at Jun. 30, 2022

$ 39

493,725

(625)

(96,301)

$ 396,838

Balances (in shares) at Mar. 31, 2022

38,875

Balance at Mar. 31, 2022

$ 39

485,676

(670)

(58,410)

426,635

Net income

26,596

Other comprehensive income (loss), net of tax

$ 0

Issuance of common stock upon exercise of stock options (in shares)

146

Issuance of common stock upon exercise of stock options

$ 0

6,504

Repurchase of common stock (in shares)

(561)

Repurchase of common stock

$ 0

(6,745)

(64,487)

(71,232)

Issuance of common stock upon vesting of restricted stock units (in shares)

Issuance of common stock upon vesting of restricted stock units

$ 0

(33)

$ 0

(4,530)

Stock-based compensation

$ 0

12,820

Balances (in shares) at Jun. 30, 2022

38,517

Balance at Jun. 30, 2022

$ 39

$ 493,725

$ (625)

$ (96,301)

$ 396,838

[1]	Included 348 thousand shares of PSOs.

Note 1 - Description of Business and Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Basis of Presentation and Significant Accounting Policies [Text Block]

NOTE 1.

Description of Business and Summary of Significant Accounting Policies

Description of Business

Qualys, Inc. (the “Company”, "we", "us", "our") was incorporated in the state of Delaware on December 30, 1999. The Company is headquartered in Foster City, California and has wholly-owned subsidiaries throughout the world. The Company is a leading provider of cloud-based information technology ("IT"), security and compliance solutions that enable organizations to identify security risks to their IT infrastructures, help protect their IT systems and applications from ever-evolving cyber-attacks and achieve compliance with internal policies and external regulations. The Company’s cloud solutions address the growing security and compliance complexities and risks that are amplified by the dissolving boundaries between internal and external IT infrastructures and web environments, the rapid adoption of cloud computing and the proliferation of geographically dispersed IT assets. Organizations can use the Company’s integrated suite of solutions delivered on its Qualys Cloud Platform to cost-effectively obtain a unified view of their security and compliance posture across globally-distributed IT infrastructures.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements and condensed footnotes have been prepared in accordance with accounting principles generally accepted in the United States ("U.S. GAAP") for interim financial information as well as the instructions to Form 10-Q and the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"). Certain information and disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. The condensed consolidated balance sheet as of December 31, 2021, included herein, was derived from the audited financial statements as of that date but does not include all disclosures, including notes required by U.S. GAAP. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, which include only normal recurring adjustments, necessary for the fair statement of the financial position, results of operations and cash flows for the interim periods. The results of operations for the three and six months ended June 30, 2022 are not necessarily indicative of the results of operations expected for the entire year ending December 31, 2022 or for any other future annual or interim periods. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021 filed with the SEC on February 22, 2022.

Risks and Uncertainties

In March 2020, the World Health Organization declared the outbreak of COVID-19 as a pandemic. As a result of COVID-19, the Company temporarily modified certain aspects of its business, including restricting employee travel, requiring employees to work from home, and canceling certain events and meetings, among other modifications. While the Company has resumed in-office work, employee travel, and in-person events and meetings, the Company will continue to actively monitor the situation and may take actions that alter its business operations as may be required by federal, state or local authorities or that the Company determines are in the best interests of its employees, customers, partners, suppliers and stockholders. While the Company has not incurred significant disruptions from the ongoing COVID-19 pandemic to date and does not expect the pandemic will have a significant impact on the Company's business throughout the remainder of 2022, the Company is unable to accurately predict the full impact that COVID-19 will have due to numerous uncertainties, including the duration of the outbreak, actions that may be taken by governmental authorities and the impact to the business of the Company's customers and partners. The Company will continue to evaluate the nature and extent of the impact to its business, financial position, results of operations and cash flows.

Use of Estimates

The preparation of the unaudited condensed consolidated financial statements in conformity with U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of assets and liabilities at the date of the condensed consolidated financial statements and the reported results of operations during the reporting period. The Company’s management regularly assesses these estimates, which primarily affect revenue recognition, allowance for credit loss, the valuation of goodwill and intangible assets, leases, stock-based compensation and income tax provision. Actual results could differ from those estimates and such differences may be material to the accompanying unaudited condensed consolidated financial statements.

Non-Marketable Securities

During the fiscal year ended December 31, 2018, the Company invested $2.5 million in preferred stock of a privately-held company. The fair value of the investment is not readily available, and there are no quoted market prices for the investment. The Company accounts for the investment at cost less impairment and will measure the investment at fair value when the Company identifies observable price changes. The investment is assessed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. No impairment has been incurred related to the investment. The investment is included in other noncurrent assets on the condensed consolidated balance sheets. The Company has not received any dividends from the investment.

Recently Adopted Accounting Pronouncements

None.

Recently Issued Accounting Pronouncements Not Yet Adopted

The Company does not believe any new accounting pronouncements issued by the FASB that have not become effective will have a material impact on its condensed consolidated financial statements.

There have been no material changes to the Company’s significant accounting policies set forth in "Note 1" of Notes to Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021.

Note 2 - Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Fair Value Disclosures [Text Block]

NOTE 2.

Fair Value of Financial Instruments

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. For certain of the Company’s financial instruments, including certain cash equivalents, accounts receivable, accounts payable and accrued liabilities, the carrying amounts approximate their fair values due to the relatively short maturity of these balances.

The Company measures and reports certain cash equivalents, marketable securities, derivative foreign currency forward contracts at fair value in accordance with the provisions of the authoritative accounting guidance that addresses fair value measurements. This guidance establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. The hierarchy is broken down into three levels based on the reliability of inputs as follows:

Level 1-Valuations based on quoted prices in active markets for identical assets or liabilities.

Level 2-Valuations based on other than quoted prices in active markets for identical assets and liabilities, including quoted prices for identical assets or liabilities in less active or inactive markets, quoted prices for similar assets or liabilities in active markets, or inputs other than quoted prices that are observable for substantially the full term of the assets or liabilities.

Level 3-Valuations based on inputs that are generally unobservable and typically reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability.

The Company's financial instruments consist of assets and liabilities measured using Level 1 and 2 inputs. Level 1 assets include a highly liquid money market fund, which is valued using unadjusted quoted prices that are available in an active market for an identical asset. Level 2 assets include fixed-income U.S. Treasury and government agency securities, commercial paper, corporate bonds, asset-backed securities, foreign government securities and derivative financial instruments consisting of foreign currency forward contracts. The securities, bonds and commercial paper are valued using prices from independent pricing services based on quoted prices of identical instruments in less active or inactive markets, quoted prices of similar instruments in active markets, or industry models using data inputs such as interest rates and prices that can be directly observed or corroborated in active markets. The foreign currency forward contracts are valued using observable inputs, such as quotations on forward foreign exchange points and foreign interest rates.

The Company's cash and cash equivalents, and marketable securities consist of the following:

	*June 30, 2022*
			*Unrealized*		*Unrealized*
	*Amortized Cost*		*Gains*		*Losses*			*Fair Value*
	(in thousands)
Cash and cash equivalents:
Cash	$	84,920	$	—	$	—		$	84,920
Money market funds		35,046		—		—			35,046
Commercial paper		999		—		—			999
Total		120,965		—		—			120,965
Short-term marketable securities:
Commercial paper		32,137		—		(37	)		32,100
Corporate bonds		38,525		3		(343	)		38,185
Asset-backed securities		5		—		—			5
U.S. Treasury and government agencies		228,376		—		(1,545	)		226,831
Foreign government		1,007		—		(4	)		1,003
Total		300,050		3		(1,929	)		298,124
Long-term marketable securities:
Corporate bonds		36,998		—		(991	)		36,007
Asset-backed securities		23,310		3		(170	)		23,143
U.S. Treasury and government agencies		21,137		—		(165	)		20,972
Total		81,445		3		(1,326	)		80,122
Total	$	502,460	$	6	$	(3,255	)	$	499,211

	*December 31, 2021*
			*Unrealized*		*Unrealized*
	*Amortized Cost*		*Gains*		*Losses*			*Fair Value*
	(in thousands)
Cash and cash equivalents:
Cash	$	61,220	$	—	$	—		$	61,220
Money market funds		75,258		—		—			75,258
Commercial paper		850		—		—			850
Total		137,328		—		—			137,328
Short-term marketable securities:(1)
Commercial paper		18,046		—		—			18,046
Corporate bonds		28,869		101		(7	)		28,963
Asset-backed securities		3,952		—		—			3,952
U.S. Treasury and government agencies		217,160		2		(163	)		216,999
Total		268,027		103		(170	)		267,960
Long-term marketable securities:
Corporate bonds		57,762		160		(182	)		57,740
Asset-backed securities		14,941		6		(36	)		14,911
U.S. Treasury and government agencies		37,664		—		(136	)		37,528
Foreign government		1,007		12		—			1,019
Total		111,374		178		(354	)		111,198
Total	$	516,729	$	281	$	(524	)	$	516,486

(1) Revised for correction of classification of amounts and security types disclosed in Note 2 to the consolidated financial statements in our Annual Report on Form 10-K for the fiscal year ended December 31, 2021.

As of June 30, 2022 the total unrealized loss from marketable securities that had been in a continuous unrealized loss position for 12 months or longer was not material. The Company had the ability and intent to hold all marketable securities that were in an unrealized loss position until recovery of the amortized cost basis. The Company considered the extent to which fair value was less than amortized cost basis and conditions related to security’s industry and geography and changes to the ratings, if any, and concluded the decline in fair value compared to carrying value was not related to credit loss. As of December 31, 2021, there were no marketable securities that had been in a continuous unrealized loss position for 12 months or longer.

The following table sets forth by level within the fair value hierarchy the fair value of the Company's cash equivalents and marketable securities measured on a recurring basis:

	*June 30, 2022*
	*Level 1*		*Level 2*		*Fair Value*
	(in thousands)
Money market funds	$	35,046	$	—	$	35,046
Commercial paper		—		33,099		33,099
Corporate bonds		—		74,192		74,192
Asset-backed securities		—		23,148		23,148
U.S. Treasury and government agencies		—		247,803		247,803
Foreign government		—		1,003		1,003
Total	$	35,046	$	379,245	$	414,291

	*December 31, 2021*
	*Level 1*		*Level 2*		*Fair Value*
	(in thousands)
Money market funds	$	75,258	$	—	$	75,258
Commercial paper		—		18,896		18,896
Corporate bonds		—		86,703		86,703
Asset-backed securities		—		18,863		18,863
U.S. Treasury and government agencies		—		254,527		254,527
Foreign government		—		1,019		1,019
Total	$	75,258	$	380,008	$	455,266

The following summarizes the fair value of marketable securities by contractual maturity:

	*June 30, 2022*
	*Mature within*		*Mature after One Year*		*Mature over*
	*One Year*		*through Two Years*		*Two Years*		*Fair Value*
	(in thousands)
Commercial paper	$	33,099	$	—	$	—	$	33,099
Corporate bonds		38,185		26,411		9,596		74,192
Asset-backed securities		5		10,238		12,905		23,148
U.S. Treasury and government agencies		226,831		20,972		—		247,803
Foreign government		1,003		—		—		1,003
Total	$	299,123	$	57,621	$	22,501	$	379,245

Derivative Financial Instruments

Designated cash flow hedges

The Company enters into foreign currency forward contracts to reduce the risk of variability in future cash flow due to foreign currency exchange rate fluctuations from certain forecasted subscription revenue orders billed in British Pound ("GBP") and Euro and operating expenses incurred in Indian Rupee ("INR"), which are designated as cash flow hedges. Unrealized foreign exchange gains or losses related to those designated cash flow hedge contracts are recorded in Accumulated other comprehensive income ("AOCI") and will be reclassified into revenues or operating expenses, respectively, in the same periods when the hedged transactions are recognized in earnings.

As of June 30, 2022, the Company had designated cash flow hedge forward contracts with notional amounts of €29.4 million, £9.1 million and Rs.3,211.0 million. As of December 31, 2021, the Company had designated cash flow hedge forward contracts with notional amounts of €29.8 million, £9.4 million and Rs.2,955.3 million. As of June 30, 2022, a net amount of unrealized gain of $3.4 million before tax on the foreign currency forward contracts for GBP and Euro reported in AOCI is expected to be reclassified into revenue within the next 12 months. As of June 30, 2022, the net amount of unrealized loss on the foreign currency forward contracts for INR reported in AOCI of $1.1 million is expected to be reclassified into operating expense within the next 12 months.

Non-designated forward contracts

The Company also uses foreign currency forward contracts to hedge certain foreign currency denominated assets or liabilities, which are not designated as cash flow hedges.

As of June 30, 2022, the Company had non-designated forward contracts with notional amounts of €38.1 million, £17.1 million, Rs.281.6 million and Canadian Dollar ("C$") 1.1 million. As of December 31, 2021, the Company had non-designated forward contracts with notional amounts of €34.5 million, £11.6 million, Rs.74.9 million, C$2.5 million and CHF1.0 million.

The following summarizes derivative financial instruments as of June 30, 2022 and December 31, 2021:

	*June 30,*			*December 31,*
	*2022*			*2021*
Assets	*(in thousands)*
Foreign currency forward contracts designated as cash flow hedge	$	3,260		$	1,737
Foreign currency forward contracts not designated as hedging instruments		3,917			1,599
Total	$	7,177		$	3,336
Liabilities
Foreign currency forward contracts designated as cash flow hedge	$	(1,150	)	$	(181	)
Foreign currency forward contracts not designated as hedging instruments		(126	)		(207	)
Total	$	(1,276	)	$	(388	)

All foreign currency forward contracts were valued at fair value using Level 2 inputs.

The following summarizes the gains (losses) recognized from forward contracts and other foreign currency transactions in other income (expense), net on the condensed consolidated statements of operations:

	*Three Months Ended*						*Six Months Ended*
	*June 30,*						*June 30,*
	*2022*			*2021*			*2022*			*2021*
	(in thousands)						(in thousands)
Net gains from non-designated forward contracts	$	3,810		$	(41	)	$	4,965		$	1,044
Other foreign currency transaction gains (losses)		(5,520	)		30			(7,338	)		(1,228	)
Total foreign exchange losses, net		(1,710	)		(11	)		(2,373	)		(184	)
Other expenses		—			(69	)		(47	)		(140	)
Other expense, net	$	(1,710	)	$	(80	)	$	(2,420	)	$	(324	)

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Note 3 - Accumulated Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Accumulated Other Comprehensive Income Disclosure [Text Block]

NOTE 3.

Accumulated Other Comprehensive Income (Loss)

The components and changes in accumulated other comprehensive income (loss) for the three and six months ended June 30, 2022 and 2021 were as follows:

	*Available-for-sale debt securities*			*Cash flow hedges*			*Total*
	(in thousands)
Balances at December 31, 2021	$	(185	)	$	1,192		$	1,007
Change in unrealized gains (losses) during the period		(2,070	)		648			(1,422	)
Net gains reclassified into income during the period		-			(60	)		(60	)
Income tax provision		(58	)		(137	)		(195	)
Net change during the period		(2,128	)		451			(1,677	)
Balances at March 31, 2022		(2,313	)		1,643			(670	)
Change in unrealized gains (losses) during the period		(933	)		1,548			615
Net gains reclassified into income during the period		-			(244	)		(244	)
Income tax provision		-			(326	)		(326	)
Net change during the period		(933	)		978			45
Balances at June 30, 2022		(3,246	)		2,621			(625	)

Balances at December 31, 2020	$	1,224		$	(1,708	)	$	(484	)
Change in unrealized gains (losses) during the period		(501	)		1,092			591
Net losses reclassified into income during the period		8			192			200
Income tax benefit (provision)		104			(291	)		(187	)
Net change during the period		(389	)		993			604
Balances at March 31, 2021		835			(715	)		120
Change in unrealized losses during the period		(273	)		(394	)		(667	)
Net losses reclassified into income during the period		8			152			160
Income tax benefit		63			59			122
Net change during the period		(202	)		(183	)		(385	)
Balances at June 30, 2021		633			(898	)		(265	)

The effects on income before income taxes of amounts reclassified from AOCI to the condensed consolidated statements of operations were as follows:

	*Three Months Ended*						*Six Months Ended*
	*June 30,*						*June 30,*
	*2022*			*2021*			*2022*		*2021*
	(in thousands)						(in thousands)
Reclassification of AOCI - Available-for-sale debt securities
Other income (expense), net	$	—		$	(8	)	$	—	$	(16	)

Reclassification of AOCI - Cash flow hedges
Revenues	$	269		$	(456	)	$	223	$	(673	)
Cost of revenues		(6	)		61			17		66
Research and development expenses		(16	)		204			52		221
Sales and marketing expenses		(1	)		12			3		13
General and administrative expenses		(2	)		27			9		29
Total	$	244		$	(152	)	$	304	$	(344	)

Note 4 - Property and Equipment, Net

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

NOTE 4.

Property and Equipment, Net

Property and equipment, net, consists of the following:

	*June 30,*			*December 31,*
	*2022*			*2021*
	(in thousands)
Computer equipment	$	170,945		$	161,809
Computer software		25,805			25,807
Leasehold improvements		21,009			21,092
Scanner appliances		16,584			16,510
Furniture, fixtures and equipment		6,434			6,479
Total property and equipment		240,777			231,697
Less: accumulated depreciation and amortization		(182,947	)		(169,843	)
Property and equipment, net	$	57,830		$	61,854

As of June 30, 2022 and December 31, 2021, physical scanner appliances and other computer equipment that are or will be subject to leases by customers had a net carrying value of $5.0 million and $5.3 million, respectively, including assets that had not been placed in service of $3.6 million and $1.3 million, respectively. Depreciation and amortization expenses relating to property and equipment were $6.9 million for each of the three months ended June 30, 2022 and 2021, and $14.0 million and $14.2 million for the six months ended June 30, 2022 and 2021, respectively.

Note 5 - Revenue From Contracts With Customers

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Revenue from Contract with Customer [Text Block]

NOTE 5.

Revenue from Contracts with Customers

The Company records deferred revenue when cash payments are received or due in advance of its performance obligations offset by revenue recognized in the period. Revenues of $75.9 million and $63.5 million were recognized during the three months ended June 30, 2022 and 2021, respectively, which amounts were included in the deferred revenue balances as of December 31, 2021 and 2020, respectively. Revenues of $175.9 million and $147.0 million were recognized during the six months ended June 30, 2022 and 2021, respectively, which amounts were included in the deferred revenue balances as of December 31, 2021 and 2020, respectively.

The Company's payment terms vary by the type and location of its customers. The term between invoicing and when payment is due is not significant. In certain circumstances, based on the credit quality of the customer, the Company requires payment before the products or services are delivered to the customer.

The following table sets forth the expected revenue from all remaining performance obligations as of June 30, 2022:

	(in thousands)
2022 (remaining six months)	$	81,069
2023		126,104
2024		54,405
2025		7,507
2026		828
2027 and thereafter		248
Total	$	270,161

Revenues allocated to remaining performance obligations represents the transaction price of noncancelable orders for which service has not been performed, which include deferred revenue and the amounts that will be invoiced and recognized as revenues in future periods from open contracts and excludes unexercised renewals. The Company applied the short-term contract exemption to exclude the remaining performance obligations that are part of a contract that has an original expected duration of one year or less.

From time to time, the Company enters into contracts with customers that extend beyond one year, with certain of its customers electing to pay for more than one year of services upon contract execution. The Company concluded that these contracts did not contain a financing component.

Revenues by sales channel are as follows:

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
	*2022*		*2021*		*2022*		*2021*
	(in thousands)				(in thousands)
Direct	$	70,176	$	58,782	$	136,628	$	116,734
Partner		49,717		40,920		96,685		79,724
Total	$	119,893	$	99,702	$	233,313	$	196,458

The Company utilizes partners to enable and accelerate the adoption of its cloud platform by increasing its distribution capabilities and market awareness of its cloud platform as well as by targeting geographic regions outside the reach of its direct sales force. The Company's channel partners maintain relationships with their customers throughout the territories in which they operate and provide their customers with services and third-party solutions to help meet those customers’ evolving security and compliance requirements. As such, these partners may offer the Company's IT security and compliance solutions in conjunction with one or more of their own products or services and act as a conduit through which the Company can connect with these prospective customers to offer its solutions. For sales involving a channel partner, the channel partner engages with the prospective customer directly and involves the Company's sales team as needed to assist in developing and closing an order. When a channel partner secures a sale, the Company sells the associated subscription to the channel partner who in turn resells the subscription to the customer. Sales to channel partners are made at a discount and revenues are recorded at this discounted price over the subscription terms. The Company does not have any influence or specific knowledge of its partners' selling terms with their customers. See Note 12, "Segment Information and Information about Geographic Area" for disaggregation of revenue by geographic area.

Deferred costs to obtain contracts are as follows:

	*June 30, 2022*		*December 31, 2021*
	(in thousands)
Current	$	4,470	$	4,223
Noncurrent	$	8,727	$	8,391

For the three months ended June 30, 2022 and 2021, the Company recognized $1.2 million and $0.9 million, respectively, of amortization expense relating to deferred costs to obtain contracts in sales and marketing expense in the condensed consolidated statements of operations. For the six months ended June 30, 2022 and 2021, the Company recognized $2.4 million and $1.8 million, respectively, of amortization expense relating to deferred costs to obtain contracts in sales and marketing expense in the condensed consolidated statements of operations. During the same periods, there was no impairment loss related to the deferred costs to obtain contracts.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI https://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-Subparagraph (c)
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+ Details

Note 6 - Intangible Assets, Net

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Intangible Assets Disclosure [Text Block]

NOTE 6.

Intangible Assets, Net

Intangible assets consist primarily of developed technology and patent licenses acquired from business or asset acquisitions. Acquired intangibles are amortized on a straight-line basis over the respective estimated useful lives of the assets.

The carrying values of intangible assets are as follows:

					*June 30, 2022*
	*Weighted Average*		*Weighted Average*
	*Life*		*Remaining Life*				*Accumulated*
(in thousands)	*(Years)*		*(Years)*		*Cost*		*Amortization*			*Net Book Value*
Developed technology		4.5		0.5	$	28,556	$	(25,468	)	$	3,088
Patent licenses		14.0		2.2		1,387		(1,171	)		216
Non-compete agreements		2.0		0.1		500		(479	)		21
Total intangibles subject to amortization					$	30,443	$	(27,118	)		3,325
Intangible assets not subject to amortization											40
Total intangible assets, net										$	3,365

					*December 31, 2021*
	*Weighted Average*		*Weighted Average*
	*Life*		*Remaining Life*				*Accumulated*
(in thousands)	*(Years)*		*(Years)*		*Cost*		*Amortization*			*Net Book Value*
Developed technology		4.5		0.9	$	28,556	$	(22,463	)	$	6,093
Patent licenses		14.0		2.7		1,387		(1,121	)		266
Non-compete agreements		2.0		0.6		500		(354	)		146
Total intangibles subject to amortization					$	30,443	$	(23,938	)		6,505
Intangible assets not subject to amortization											40
Total intangible assets, net										$	6,545

Intangible asset amortization expense was $1.5 million and $1.6 million for the three months ended June 30, 2022 and 2021, respectively, and $3.2 million and $3.3 million for the six months ended June 30, 2022 and 2021, respectively. Intangible asset amortization expenses were primarily recorded in cost of revenues in the condensed consolidated statements of operations.

As of June 30, 2022, the Company expects amortization expense in future periods to be as follows:

	(in thousands)
2022 (remaining six months)	$	1,883
2023		590
2024		452
2025		240
2026		160
Total expected future amortization expense	$	3,325

Note 7 - Leases

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Lessee, Operating Leases and Finance Lease [Text Block]

NOTE 7.

Leases

The Company leases certain offices, computer equipment and its data center facilities under non-cancelable operating leases for varying periods through 2028. While under the Company's lease agreements the Company has options to extend its certain leases, the Company has not included renewal options in determining the lease terms for calculating its lease liabilities, as these options are not reasonably certain of being exercised. Lease expense was $3.8 million and $3.6 million for the three months ended June 30, 2022 and 2021, respectively, and $7.3 million and $7.2 million for the six months ended June 30, 2022 and 2021, respectively.

Supplemental cash flow information related to operating leases was as follows:

	*Six Months Ended*
	*June 30,*
	*2022*		*2021*
	(in thousands)
Cash payments included in the measurement of lease liabilities	$	8,190	$	6,853
Lease liabilities arising from obtaining right-of-use assets	$	2,486	$	1,179

The weighted average remaining lease term and the weighted average discount rate of the Company's operating leases were as follows:

	*June 30, 2022*			*December 31, 2021*
Weighted average remaining lease term (years)		2.9			3.3
Weighted average discount rate		4.9	%		4.8	%

Note 8 - Commitment and Contingencies

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Commitments and Contingencies Disclosure [Text Block]

NOTE 8.

Commitments and Contingencies

Indemnifications

The Company from time to time enters into certain types of contracts that contingently require it to indemnify various parties against claims from third parties. These contracts primarily relate to (i) the Company's bylaws, under which it must indemnify directors and executive officers, and may indemnify other officers and employees, for liabilities arising out of their relationship, (ii) contracts under which the Company must indemnify directors and certain officers for liabilities arising out of their relationship, and (iii) contracts under which the Company may be required to indemnify customers or resellers from certain liabilities arising from potential infringement of intellectual property rights, as well as potential damages caused by limited product defects. To date, the Company has not incurred and has not recorded any liability in connection with such indemnifications.

The Company maintains director and officer insurance, which may cover certain liabilities arising from its obligation to indemnify its directors.

Note 9 - Stockholders' Equity and Stock-based Compensation

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Shareholders' Equity and Share-Based Payments [Text Block]

NOTE 9.

Stockholders' Equity and Stock-based Compensation

Equity Incentive Plans

Restated 2012 Equity Incentive Plan

On June 8, 2022 ("Effective Date"), the Company's stockholders approved the Amended and Restated 2012 Equity Incentive Plan (the "Restated 2012 Plan"). Under the Restated 2012 Plan, the Company is authorized to grant to eligible participants incentive stock options (“ISOs”), nonstatutory stock options (“NSOs”), restricted stock, restricted stock units ("RSUs"), stock appreciation rights ("SARs"), performance units and performance shares. Pursuant to the relevant plan provisions, 3,072 thousand shares were available for grant under the Restated 2012 Plan on the Effective Date. In addition, any outstanding awards or options granted under the previous version of the 2012 Equity Incentive Plan (“Previous 2012 Plan”) will be added back to the shares available for grant under the Restated 2012 Plan if they expire unexercised or are otherwise forfeited after the Effective Date. Any remaining shares available for grant under the Previous 2012 Plan as of the Effective Date were no longer available for future grants under the Restated 2012 Plan.

As of June 30, 2022, 3,089 thousand shares were available for grant under the Restated 2012 Plan.

2021 Employee Stock Purchase Plan

On June 9, 2021, the Company’s stockholders approved the 2021 Employee Stock Purchase Plan (the “ESPP”). A total of 600 thousand shares were authorized for issuance to eligible participating employees upon adoption of the ESPP. The ESPP provides for consecutive 6-month offering periods beginning on or about August 16 and February 16 of each year. Eligible employees who elect to participate can contribute from 1% to 15% of their eligible compensation through payroll withholding. During any offering period, contribution rates cannot be changed. However, eligible employees may withdraw from the current offering period. Any contributions made prior to each purchase date in the case of withdrawal or termination of employment will be refunded. On each purchase date, eligible participating employees will purchase the shares at a price per share equal to 85% of the lesser of (i) the fair market value of the Company's stock on the first trading day of the offering period or (ii) the fair market value of the Company's stock on the purchase date (i.e., the last trading day of the offering period).

During the six months ended June 30, 2022, 22.5 thousand shares were issued in connection with the purchase of common stock by participating employees. As of June 30, 2022, 577.5 thousand shares were available for future purchases.

Stock-based Compensation

The following table shows a summary of the stock-based compensation expense included in the condensed consolidated statements of operations:

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
	*2022*		*2021*		*2022*		*2021*
	(in thousands)				(in thousands)
Cost of revenues	$	1,273	$	841	$	2,355	$	1,716
Research and development		3,541		2,582		6,828		4,797
Sales and marketing		2,305		1,086		4,334		2,714
General and administrative		5,701		4,044		11,048		37,528
Total stock-based compensation	$	12,820	$	8,553	$	24,565	$	46,755

As of June 30, 2022, the Company had unrecognized stock-based compensation expenses of $19.7 million, $70.0 million, $4.0 million, and $0.2 million related to options, RSUs, performance-based RSUs, and ESPP purchase rights, respectively, which are expected to be recognized over weighted-average periods of 2.8 years, 2.7 years, 1.9 years, and 0.1 years, respectively.

Performance-based Restricted Stock Units ("PSUs") and Performance-based Stock Options

On October 28, 2021, the compensation committee of the Company's board of directors (Compensation Committee) granted to certain executive officers of the Company equity awards consisting of RSUs and an aggregate number of 73 thousand PSUs, which represents the target number of PSUs allocated to awards that are divided into three equal tranches, with each tranche covering one-year performance period for the calendar years 2022, 2023, and 2024, respectively. The actual number of PSUs eligible to vest each year range from 0% to 200% of the annual target number, depending on the level of achievement of performance metrics related to revenue growth and adjusted EBITDA margin corresponding to that year, which are established by the Compensation Committee before the commencement of each year. The vesting and release of the first and second tranche is capped at 100% of the target number at the end of the first and second year, respectively, with cumulative achievement over 100%, if any, to be vested and released at the end of the third year, together with the vesting of the third tranche. If any of the executive officers is terminated (a) by reason of death or disability or (b) by the Company for reasons other than cause or good reason within 12 months following a change in control, any unvested PSUs eligible to vest pursuant to cumulative achievements over 100% for past tranches along with any target number of unvested PSUs for any remaining tranches will vest immediately. Since the performance metrics for the second and third tranches of these PSUs have not been established as of June 30, 2022, the grant date has not been determined and no expenses have been recognized for the respective tranches.

On April 27, 2021, the Compensation Committee granted to the Company’s President and Chief Executive Officer an equity award consisting of RSUs and a target number of 9,671 PSUs. The PSUs are scheduled to vest at the end of the three-year performance period from January 2021 through December 2023. The actual number of PSUs eligible to vest range from 0% to 200% of the target number, depending on the level of achievement of performance metrics related to revenue growth and free cash flow per share growth during the performance period. If the Company's President and Chief Executive Officer is terminated (a) by reason of death or disability or (b) by the Company for reasons other than cause or good reason within 12 months following a change in control, then 100% of any unvested portions of the award will vest, with any vesting in connection with terminations due to change in control conditioned upon the effectiveness of a release of claims in favor of the Company.

The Company recognized $1.1 million of stock-based compensation expenses related to all PSUs during the three months ended June 30, 2022, and $1.9 million of stock-based compensation expenses related to all PSUs during the six months ended June 30, 2022.

On March 19, 2021, the Company’s former chief executive officer, Philippe Courtot ("Mr. Courtot"), resigned from the Company due to health issues. The Compensation Committee determined that Mr. Courtot’s termination of employment was on account of disability. In accordance with the equity award agreements covering Mr. Courtot's then outstanding awards, all eligible outstanding RSUs, PSUs and performance-based stock options held by Mr. Courtot became immediately vested as of the date of his termination of employment. As a result, the Company recognized $27.3 million of stock-based compensation expense due to the accelerated vesting in the condensed consolidated statements of operations during the six months ended June 30, 2021.

Stock Option Activity

A summary of the Company’s stock option activity is as follows:

				*Weighted*		*Weighted Average*
	*Outstanding*			*Average*		*Remaining*		*Aggregate*
	*Options*			*Exercise Price*		*Contractual Life*		*Intrinsic Value*
		(in thousands)					(Years)		(in thousands)
Balance as of December 31, 2021		1,838		$	66.05		6.0	$	130,791
Granted		278		$	135.01
Exercised		(212	)	$	42.72
Canceled		(89	)	$	111.97
Balance as of June 30, 2022		1,815		$	77.08		6.2	$	91,404
Vested and expected to vest - June 30, 2022		1,618		$	71.75		5.9	$	89,608
Exercisable - June 30, 2022		1,087		$	49.76		4.4	$	83,037

Restricted Stock Unit Activity

A summary of the Company’s RSU activity is as follows:

					*Weighted Average*
					*Grant Date*
	*Outstanding*				*Fair Value*
	*RSUs*				*Per Share*
	(in thousands)
Balance as of December 31, 2021		917		(1)	$	104.78
Granted		190			$	137.19
Vested		(160	)		$	98.01
Canceled		(83	)		$	116.12
Balance as of June 30, 2022		864		(1)	$	111.89
Outstanding and expected to vest - June 30, 2022		749			$	110.04

(1) Includes 34 thousand PSUs granted to certain executive officers in 2021.

Share Repurchase Program

The Company's share repurchase program was authorized by the board of directors as follows:

Announcement Date	*Authorized Dollar Value*
	(in millions)
February 12, 2018	$	100.0
October 30, 2018		100.0
October 30, 2019		100.0
May 7, 2020		100.0
February 10, 2021		100.0
November 3, 2021		200.0
May 4, 2022		200.0
Total as of June 30, 2022	$	900.0

Shares may be repurchased from time to time on the open market in accordance with Rule 10b-18 of the Exchange Act of 1934, including pursuant to a pre-set trading plan adopted in accordance with Rule 10b5-1 under the Exchange Act. All share repurchases have been made using cash resources. Repurchased shares are retired and reclassified as authorized and unissued shares of common stock. On retirement of the repurchased shares, common stock is reduced by an amount equal to the number of shares being retired multiplied by the par value. The excess amount that is retired over its par value is first allocated as a reduction to additional paid-in capital based on the initial public offering price of the stock, with the remaining excess to accumulated deficit.

During the six months ended June 30, 2022 and 2021, the Company repurchased 929 thousand shares and 585 thousand shares of its common stock for approximately $117.8 million and $63.3 million, respectively. As of June 30, 2022, approximately $354.0 million remained available for share repurchases pursuant to the Company's share repurchase program.

Note 10 - Net Income Per Share

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Earnings Per Share [Text Block]

NOTE 10.

Net Income Per Share

The computations for basic and diluted net income per share are as follows:

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
	*2022*		*2021*		*2022*		*2021*
	(in thousands, except per share data)				(in thousands, except per share data)
Numerator:
Net income	$	26,596	$	21,142	$	52,006	$	21,370
Denominator:
Basic weighted average shares		38,738		39,099		38,864		39,154
Effect of potentially dilutive shares:
Stock options		719		831		744		851
Restricted stock units		230		147		233		248
Employee stock purchase plan		2		—		3		—
Diluted weighted average shares		39,689		40,077		39,844		40,253
Net income per share:
Basic	$	0.69	$	0.54	$	1.34	$	0.55
Diluted	$	0.67	$	0.53	$	1.31	$	0.53

Potentially dilutive shares not included in the calculation of diluted net income per share because doing so would be anti-dilutive are as follows:

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
	*2022*		*2021*		*2022*		*2021*
	(in thousands)				(in thousands)
Stock options		688		675		645		524
Restricted stock units		88		153		44		96
Employee stock purchase plan		—		—		4		—
Total anti-dilutive shares		776		828		693		620

Note 11 - Income Taxes

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Income Tax Disclosure [Text Block]

NOTE 11.

Income Taxes

The Company's income tax provision for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items, if any, that arise during the period. Each quarter, the Company updates its estimate of the annual effective tax rate, and if the estimated annual effective tax rate changes, the Company makes a cumulative adjustment in such period.

The Company's quarterly tax provision, and estimate of its annual effective tax rate, is subject to variation due to several factors, including variability in pre-tax income (or loss), the mix of jurisdictions to which such income relates, changes in how the Company does business, tax law developments and possible outcomes of audits. The Company's estimated effective tax rate for the year differs from the U.S. statutory rate of 21% primarily due to non-deductible stock-based compensation expense, state taxes, the benefit of U.S. federal income tax credits and the foreign-derived intangible income deduction.

The Company recorded an income tax provision of $5.5 million and $8.7 million for the three months ended June 30, 2022 and 2021, respectively, resulting in an effective tax rate of 17.2% and 29.2%, respectively. The decrease in income tax provision for the three months ended June 30, 2022 compared to the three months ended June 30, 2021 was primarily due to higher excess tax benefits arising from stock-based compensation and the effects of a tax law change related to mandatory capitalization of research and development expenses starting January 1, 2022.

The Company recorded an income tax provision of $13.5 million and $6.3 million for the six months ended June 30, 2022 and 2021, respectively, resulting in an effective tax rate of 20.6% and 22.7%, respectively. The increase in income tax provision for the six months ended June 30, 2022 compared to the six months ended June 30, 2021 was primarily due to an increase in pre-tax income associated with the accelerated vesting of Mr. Courtot's equity awards in the six months ended June 30, 2021, partially offset by an increase in excess tax benefits arising from stock-based compensation and the effects of a tax law change related to mandatory capitalization of research and development expenses starting January 1, 2022.

As of June 30, 2022, the Company had unrecognized tax benefits of $10.1 million, of which $5.1 million, if recognized, would favorably impact the Company's effective tax rate. As of December 31, 2021, the Company had unrecognized tax benefits of $9.7 million, of which $4.9 million, if recognized, would favorably impact the Company's effective tax rate. The Company does not anticipate a material change in its unrecognized tax benefits in the next 12 months.

On June 29, 2020, the California governor signed into law the 2020 Budget Act, which temporarily suspends the utilization of net operating losses and limits the utilization of the research credit to $5 million annually for 2020, 2021 and 2022. The Company does not expect a material impact to the condensed consolidated financial statements for the three months or six months ended June 30, 2022 as a result of the 2020 Budget Act.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

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+ Details

Note 12 - Segment Information and Information About Geographic Area

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

NOTE 12.

Segment Information and Information about Geographic Area

Under ASC 280 Segment Reporting, operating segments are defined as components of an entity about which separate financial information is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. The Company operates in one segment and has only one reportable segment. The Company’s chief operating decision maker is the Chief Executive Officer, who makes operating decisions, assesses performance and allocates resources on a consolidated basis. All of the Company’s principal operations and decision-making functions are located in the United States.

Revenue by geographic area, based on the customer's billing address, is as follows:

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
	*2022*		*2021*		*2022*		*2021*
	(in thousands)				(in thousands)
United States	$	71,608	$	60,991	$	139,084	$	121,123
Foreign		48,285		38,711		94,229		75,335
Total revenues	$	119,893	$	99,702	$	233,313	$	196,458

Long-lived assets, which consist of Property and equipment, net and Operating leases - right of use asset, by geographic area, are as follows:

	*June 30,*		*December 31,*
	*2022*		*2021*
	(in thousands)
United States	$	62,655	$	66,440
India		19,270		20,401
Rest of world		9,356		12,029
Total	$	91,281	$	98,870

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/topic&trid=2134510

+ Details

Significant Accounting Policies (Policies)	6 Months Ended
Significant Accounting Policies (Policies)	Jun. 30, 2022
Accounting Policies [Abstract]
Description Of Business Policy [Policy Text Block]	*Description of Business* Qualys, Inc. (the “Company”, "we", "us", "our") was incorporated in the state of Delaware on December 30, 1999. The Company is headquartered in Foster City, California and has wholly-owned subsidiaries throughout the world. The Company is a leading provider of cloud-based information technology ("IT"), security and compliance solutions that enable organizations to identify security risks to their IT infrastructures, help protect their IT systems and applications from ever-evolving cyber-attacks and achieve compliance with internal policies and external regulations. The Company’s cloud solutions address the growing security and compliance complexities and risks that are amplified by the dissolving boundaries between internal and external IT infrastructures and web environments, the rapid adoption of cloud computing and the proliferation of geographically dispersed IT assets. Organizations can use the Company’s integrated suite of solutions delivered on its Qualys Cloud Platform to cost-effectively obtain a unified view of their security and compliance posture across globally-distributed IT infrastructures.
Basis of Accounting, Policy [Policy Text Block]	*Basis of Presentation* The accompanying unaudited condensed consolidated financial statements and condensed footnotes have been prepared in accordance with accounting principles generally accepted in the United States ("U.S. GAAP") for interim financial information as well as the instructions to Form 10-Q and the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"). Certain information and disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. The condensed consolidated balance sheet as of December 31, 2021, included herein, was derived from the audited financial statements as of that date but does not include all disclosures, including notes required by U.S. GAAP. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, which include only normal recurring adjustments, necessary for the fair statement of the financial position, results of operations and cash flows for the interim periods. The results of operations for the three and six months ended June 30, 2022 are not necessarily indicative of the results of operations expected for the entire year ending December 31, 2022 or for any other future annual or interim periods. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021 filed with the SEC on February 22, 2022.
Risk and Uncertainties, Policy [Policy Text Block]	*Risks and Uncertainties* In March 2020, the World Health Organization declared the outbreak of COVID-19 as a pandemic. As a result of COVID-19, the Company temporarily modified certain aspects of its business, including restricting employee travel, requiring employees to work from home, and canceling certain events and meetings, among other modifications. While the Company has resumed in-office work, employee travel, and in-person events and meetings, the Company will continue to actively monitor the situation and may take actions that alter its business operations as may be required by federal, state or local authorities or that the Company determines are in the best interests of its employees, customers, partners, suppliers and stockholders. While the Company has not incurred significant disruptions from the ongoing COVID-19 pandemic to date and does not expect the pandemic will have a significant impact on the Company's business throughout the remainder of 2022, the Company is unable to accurately predict the full impact that COVID-19 will have due to numerous uncertainties, including the duration of the outbreak, actions that may be taken by governmental authorities and the impact to the business of the Company's customers and partners. The Company will continue to evaluate the nature and extent of the impact to its business, financial position, results of operations and cash flows.
Use of Estimates, Policy [Policy Text Block]	*Use of Estimates* The preparation of the unaudited condensed consolidated financial statements in conformity with U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of assets and liabilities at the date of the condensed consolidated financial statements and the reported results of operations during the reporting period. The Company’s management regularly assesses these estimates, which primarily affect revenue recognition, allowance for credit loss, the valuation of goodwill and intangible assets, leases, stock-based compensation and income tax provision. Actual results could differ from those estimates and such differences may be material to the accompanying unaudited condensed consolidated financial statements.
Securities Owned Not Readily Marketable, Policy [Policy Text Block]	*Non-Marketable Securities* During the fiscal year ended December 31, 2018, the Company invested $2.5 million in preferred stock of a privately-held company. The fair value of the investment is not readily available, and there are no quoted market prices for the investment. The Company accounts for the investment at cost less impairment and will measure the investment at fair value when the Company identifies observable price changes. The investment is assessed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. No impairment has been incurred related to the investment. The investment is included in other noncurrent assets on the condensed consolidated balance sheets. The Company has not received any dividends from the investment.
New Accounting Pronouncements, Policy [Policy Text Block]	*Recently Adopted Accounting Pronouncements* None. **Recently Issued Accounting Pronouncements Not* Yet Adopted*** The Company does not believe any new accounting pronouncements issued by the FASB that have not become effective will have a material impact on its condensed consolidated financial statements. There have been no material changes to the Company’s significant accounting policies set forth in "Note 1" of Notes to Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021.

Note 2 - Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Cash and Cash Equivalents and Debt Securities, Available-for-sale, Amortized Cost to Fair Value [Table Text Block]

	*June 30, 2022*
			*Unrealized*		*Unrealized*
	*Amortized Cost*		*Gains*		*Losses*			*Fair Value*
	(in thousands)
Cash and cash equivalents:
Cash	$	84,920	$	—	$	—		$	84,920
Money market funds		35,046		—		—			35,046
Commercial paper		999		—		—			999
Total		120,965		—		—			120,965
Short-term marketable securities:
Commercial paper		32,137		—		(37	)		32,100
Corporate bonds		38,525		3		(343	)		38,185
Asset-backed securities		5		—		—			5
U.S. Treasury and government agencies		228,376		—		(1,545	)		226,831
Foreign government		1,007		—		(4	)		1,003
Total		300,050		3		(1,929	)		298,124
Long-term marketable securities:
Corporate bonds		36,998		—		(991	)		36,007
Asset-backed securities		23,310		3		(170	)		23,143
U.S. Treasury and government agencies		21,137		—		(165	)		20,972
Total		81,445		3		(1,326	)		80,122
Total	$	502,460	$	6	$	(3,255	)	$	499,211

	*December 31, 2021*
			*Unrealized*		*Unrealized*
	*Amortized Cost*		*Gains*		*Losses*			*Fair Value*
	(in thousands)
Cash and cash equivalents:
Cash	$	61,220	$	—	$	—		$	61,220
Money market funds		75,258		—		—			75,258
Commercial paper		850		—		—			850
Total		137,328		—		—			137,328
Short-term marketable securities:(1)
Commercial paper		18,046		—		—			18,046
Corporate bonds		28,869		101		(7	)		28,963
Asset-backed securities		3,952		—		—			3,952
U.S. Treasury and government agencies		217,160		2		(163	)		216,999
Total		268,027		103		(170	)		267,960
Long-term marketable securities:
Corporate bonds		57,762		160		(182	)		57,740
Asset-backed securities		14,941		6		(36	)		14,911
U.S. Treasury and government agencies		37,664		—		(136	)		37,528
Foreign government		1,007		12		—			1,019
Total		111,374		178		(354	)		111,198
Total	$	516,729	$	281	$	(524	)	$	516,486

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	*June 30, 2022*
	*Level 1*		*Level 2*		*Fair Value*
	(in thousands)
Money market funds	$	35,046	$	—	$	35,046
Commercial paper		—		33,099		33,099
Corporate bonds		—		74,192		74,192
Asset-backed securities		—		23,148		23,148
U.S. Treasury and government agencies		—		247,803		247,803
Foreign government		—		1,003		1,003
Total	$	35,046	$	379,245	$	414,291

	*December 31, 2021*
	*Level 1*		*Level 2*		*Fair Value*
	(in thousands)
Money market funds	$	75,258	$	—	$	75,258
Commercial paper		—		18,896		18,896
Corporate bonds		—		86,703		86,703
Asset-backed securities		—		18,863		18,863
U.S. Treasury and government agencies		—		254,527		254,527
Foreign government		—		1,019		1,019
Total	$	75,258	$	380,008	$	455,266

Investments Classified by Contractual Maturity Date [Table Text Block]

	*June 30, 2022*
	*Mature within*		*Mature after One Year*		*Mature over*
	*One Year*		*through Two Years*		*Two Years*		*Fair Value*
	(in thousands)
Commercial paper	$	33,099	$	—	$	—	$	33,099
Corporate bonds		38,185		26,411		9,596		74,192
Asset-backed securities		5		10,238		12,905		23,148
U.S. Treasury and government agencies		226,831		20,972		—		247,803
Foreign government		1,003		—		—		1,003
Total	$	299,123	$	57,621	$	22,501	$	379,245

Schedule of Derivative Instruments [Table Text Block]

	*June 30,*			*December 31,*
	*2022*			*2021*
Assets	*(in thousands)*
Foreign currency forward contracts designated as cash flow hedge	$	3,260		$	1,737
Foreign currency forward contracts not designated as hedging instruments		3,917			1,599
Total	$	7,177		$	3,336
Liabilities
Foreign currency forward contracts designated as cash flow hedge	$	(1,150	)	$	(181	)
Foreign currency forward contracts not designated as hedging instruments		(126	)		(207	)
Total	$	(1,276	)	$	(388	)

Derivative Instruments, Gain (Loss) [Table Text Block]

	*Three Months Ended*						*Six Months Ended*
	*June 30,*						*June 30,*
	*2022*			*2021*			*2022*			*2021*
	(in thousands)						(in thousands)
Net gains from non-designated forward contracts	$	3,810		$	(41	)	$	4,965		$	1,044
Other foreign currency transaction gains (losses)		(5,520	)		30			(7,338	)		(1,228	)
Total foreign exchange losses, net		(1,710	)		(11	)		(2,373	)		(184	)
Other expenses		—			(69	)		(47	)		(140	)
Other expense, net	$	(1,710	)	$	(80	)	$	(2,420	)	$	(324	)

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

Note 3 - Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	*Available-for-sale debt securities*			*Cash flow hedges*			*Total*
	(in thousands)
Balances at December 31, 2021	$	(185	)	$	1,192		$	1,007
Change in unrealized gains (losses) during the period		(2,070	)		648			(1,422	)
Net gains reclassified into income during the period		-			(60	)		(60	)
Income tax provision		(58	)		(137	)		(195	)
Net change during the period		(2,128	)		451			(1,677	)
Balances at March 31, 2022		(2,313	)		1,643			(670	)
Change in unrealized gains (losses) during the period		(933	)		1,548			615
Net gains reclassified into income during the period		-			(244	)		(244	)
Income tax provision		-			(326	)		(326	)
Net change during the period		(933	)		978			45
Balances at June 30, 2022		(3,246	)		2,621			(625	)

Balances at December 31, 2020	$	1,224		$	(1,708	)	$	(484	)
Change in unrealized gains (losses) during the period		(501	)		1,092			591
Net losses reclassified into income during the period		8			192			200
Income tax benefit (provision)		104			(291	)		(187	)
Net change during the period		(389	)		993			604
Balances at March 31, 2021		835			(715	)		120
Change in unrealized losses during the period		(273	)		(394	)		(667	)
Net losses reclassified into income during the period		8			152			160
Income tax benefit		63			59			122
Net change during the period		(202	)		(183	)		(385	)
Balances at June 30, 2021		633			(898	)		(265	)

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

	*Three Months Ended*						*Six Months Ended*
	*June 30,*						*June 30,*
	*2022*			*2021*			*2022*		*2021*
	(in thousands)						(in thousands)
Reclassification of AOCI - Available-for-sale debt securities
Other income (expense), net	$	—		$	(8	)	$	—	$	(16	)

Reclassification of AOCI - Cash flow hedges
Revenues	$	269		$	(456	)	$	223	$	(673	)
Cost of revenues		(6	)		61			17		66
Research and development expenses		(16	)		204			52		221
Sales and marketing expenses		(1	)		12			3		13
General and administrative expenses		(2	)		27			9		29
Total	$	244		$	(152	)	$	304	$	(344	)

Note 4 - Property and Equipment, Net (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Property, Plant and Equipment [Table Text Block]

	*June 30,*			*December 31,*
	*2022*			*2021*
	(in thousands)
Computer equipment	$	170,945		$	161,809
Computer software		25,805			25,807
Leasehold improvements		21,009			21,092
Scanner appliances		16,584			16,510
Furniture, fixtures and equipment		6,434			6,479
Total property and equipment		240,777			231,697
Less: accumulated depreciation and amortization		(182,947	)		(169,843	)
Property and equipment, net	$	57,830		$	61,854

Note 5 - Revenue From Contracts With Customers (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

	(in thousands)
2022 (remaining six months)	$	81,069
2023		126,104
2024		54,405
2025		7,507
2026		828
2027 and thereafter		248
Total	$	270,161

Disaggregation of Revenue [Table Text Block]

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
	*2022*		*2021*		*2022*		*2021*
	(in thousands)				(in thousands)
Direct	$	70,176	$	58,782	$	136,628	$	116,734
Partner		49,717		40,920		96,685		79,724
Total	$	119,893	$	99,702	$	233,313	$	196,458

Contract With Customer, Commission Asset Balances [Table Text Block]

	*June 30, 2022*		*December 31, 2021*
	(in thousands)
Current	$	4,470	$	4,223
Noncurrent	$	8,727	$	8,391

Note 6 - Intangible Assets, Net (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]

					*June 30, 2022*
	*Weighted Average*		*Weighted Average*
	*Life*		*Remaining Life*				*Accumulated*
(in thousands)	*(Years)*		*(Years)*		*Cost*		*Amortization*			*Net Book Value*
Developed technology		4.5		0.5	$	28,556	$	(25,468	)	$	3,088
Patent licenses		14.0		2.2		1,387		(1,171	)		216
Non-compete agreements		2.0		0.1		500		(479	)		21
Total intangibles subject to amortization					$	30,443	$	(27,118	)		3,325
Intangible assets not subject to amortization											40
Total intangible assets, net										$	3,365

					*December 31, 2021*
	*Weighted Average*		*Weighted Average*
	*Life*		*Remaining Life*				*Accumulated*
(in thousands)	*(Years)*		*(Years)*		*Cost*		*Amortization*			*Net Book Value*
Developed technology		4.5		0.9	$	28,556	$	(22,463	)	$	6,093
Patent licenses		14.0		2.7		1,387		(1,121	)		266
Non-compete agreements		2.0		0.6		500		(354	)		146
Total intangibles subject to amortization					$	30,443	$	(23,938	)		6,505
Intangible assets not subject to amortization											40
Total intangible assets, net										$	6,545

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

	(in thousands)
2022 (remaining six months)	$	1,883
2023		590
2024		452
2025		240
2026		160
Total expected future amortization expense	$	3,325

Note 7 - Leases (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Lessee, Operating Lease, Supplemental Cash Flow Disclosure [Table Text Block]

	*Six Months Ended*
	*June 30,*
	*2022*		*2021*
	(in thousands)
Cash payments included in the measurement of lease liabilities	$	8,190	$	6,853
Lease liabilities arising from obtaining right-of-use assets	$	2,486	$	1,179

Lessee, Weighted Average Remaining Lease Term and Weighted Average Discount Rate [Table Text Block]

	*June 30, 2022*			*December 31, 2021*
Weighted average remaining lease term (years)		2.9			3.3
Weighted average discount rate		4.9	%		4.8	%

Note 9 - Stockholders' Equity and Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
	*2022*		*2021*		*2022*		*2021*
	(in thousands)				(in thousands)
Cost of revenues	$	1,273	$	841	$	2,355	$	1,716
Research and development		3,541		2,582		6,828		4,797
Sales and marketing		2,305		1,086		4,334		2,714
General and administrative		5,701		4,044		11,048		37,528
Total stock-based compensation	$	12,820	$	8,553	$	24,565	$	46,755

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

				*Weighted*		*Weighted Average*
	*Outstanding*			*Average*		*Remaining*		*Aggregate*
	*Options*			*Exercise Price*		*Contractual Life*		*Intrinsic Value*
		(in thousands)					(Years)		(in thousands)
Balance as of December 31, 2021		1,838		$	66.05		6.0	$	130,791
Granted		278		$	135.01
Exercised		(212	)	$	42.72
Canceled		(89	)	$	111.97
Balance as of June 30, 2022		1,815		$	77.08		6.2	$	91,404
Vested and expected to vest - June 30, 2022		1,618		$	71.75		5.9	$	89,608
Exercisable - June 30, 2022		1,087		$	49.76		4.4	$	83,037

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

					*Weighted Average*
					*Grant Date*
	*Outstanding*				*Fair Value*
	*RSUs*				*Per Share*
	(in thousands)
Balance as of December 31, 2021		917		(1)	$	104.78
Granted		190			$	137.19
Vested		(160	)		$	98.01
Canceled		(83	)		$	116.12
Balance as of June 30, 2022		864		(1)	$	111.89
Outstanding and expected to vest - June 30, 2022		749			$	110.04

Share Repurchase Program [Table Text Block]

Announcement Date	*Authorized Dollar Value*
	(in millions)
February 12, 2018	$	100.0
October 30, 2018		100.0
October 30, 2019		100.0
May 7, 2020		100.0
February 10, 2021		100.0
November 3, 2021		200.0
May 4, 2022		200.0
Total as of June 30, 2022	$	900.0

Note 10 - Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
	*2022*		*2021*		*2022*		*2021*
	(in thousands, except per share data)				(in thousands, except per share data)
Numerator:
Net income	$	26,596	$	21,142	$	52,006	$	21,370
Denominator:
Basic weighted average shares		38,738		39,099		38,864		39,154
Effect of potentially dilutive shares:
Stock options		719		831		744		851
Restricted stock units		230		147		233		248
Employee stock purchase plan		2		—		3		—
Diluted weighted average shares		39,689		40,077		39,844		40,253
Net income per share:
Basic	$	0.69	$	0.54	$	1.34	$	0.55
Diluted	$	0.67	$	0.53	$	1.31	$	0.53

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
	*2022*		*2021*		*2022*		*2021*
	(in thousands)				(in thousands)
Stock options		688		675		645		524
Restricted stock units		88		153		44		96
Employee stock purchase plan		—		—		4		—
Total anti-dilutive shares		776		828		693		620

Note 12 - Segment Information and Information About Geographic Area (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
	*2022*		*2021*		*2022*		*2021*
	(in thousands)				(in thousands)
United States	$	71,608	$	60,991	$	139,084	$	121,123
Foreign		48,285		38,711		94,229		75,335
Total revenues	$	119,893	$	99,702	$	233,313	$	196,458

	*June 30,*		*December 31,*
	*2022*		*2021*
	(in thousands)
United States	$	62,655	$	66,440
India		19,270		20,401
Rest of world		9,356		12,029
Total	$	91,281	$	98,870

Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual) - Preferred Stock [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2018
Investments, Total		$ 2,500
Other than Temporary Impairment Losses, Investments, Total		$ 0
Proceeds from Dividends Received	$ 0

Note 2 - Fair Value of Financial Instruments (Details Textual) Pure in Thousands, € in Millions, ₨ in Millions, £ in Millions, SFr in Millions, $ in Millions, $ in Millions	Jun. 30, 2022 USD ($)	Jun. 30, 2022 EUR (€)	Jun. 30, 2022 GBP (£)	Jun. 30, 2022 INR (₨)	Jun. 30, 2022 CAD ($)	Dec. 31, 2021 EUR (€)	Dec. 31, 2021 GBP (£)	Dec. 31, 2021 INR (₨)	Dec. 31, 2021 CAD ($)	Dec. 31, 2021 CHF (SFr)
Marketable Securities In Unrealized Loss Positions, More Than 12 Months Qualitative Disclosure, Number Of Positions						0	0	0	0	0
Foreign Exchange Contract [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Derivative, Notional Amount		€ 29.4	£ 9.1	₨ 3,211.0		€ 29.8	£ 9.4	₨ 2,955.3
Foreign Exchange Contract [Member] \| Not Designated as Hedging Instrument [Member]
Derivative, Notional Amount		€ 38.1	£ 17.1	₨ 281.6	$ 1.1	€ 34.5	£ 11.6	₨ 74.9	$ 2.5	SFr 1
Foreign Exchange Contracts for GBP and Euro [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	$ 3.4
Foreign Exchange Contracts for INR [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	$ 1.1

Note 2 - Fair Value of Financial Instruments - Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Cash and cash equivalents	$ 120,965	$ 137,328
Cash and cash equivalents	120,965	137,328
Cash and cash equivalents, unrealized loss	0
Short-term marketable securities, amortization cost	300,050	268,027
Unrealized gains, short-term securities	3	103
Short-term marketable securities, unrealized loss	(1,929)	(170)
Short-term marketable securities	298,124	267,960
Long-term marketable securities, amortization cost	81,445	111,374
Unrealized gains, long-term securities	3	178
Long-term marketable securities, unrealized loss	(1,326)	(354)
Long-term marketable securities	80,122	111,198
Cash and cash equivalents and marketable securities, amortization cost	502,460	516,729
Unrealized gains, securities	6	281
Unrealized loss, securities	(3,255)	(524)
Cash and cash equivalents and short-term and long-term Marketable Securities, fair value	499,211	516,486
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Short-term marketable securities, amortization cost	32,137	18,046
Unrealized gains, short-term securities	0	0
Short-term marketable securities, unrealized loss	(37)	0
Short-term marketable securities	32,100	18,046
Corporate Debt Securities [Member]
Short-term marketable securities, amortization cost	38,525	28,869
Unrealized gains, short-term securities	3	101
Short-term marketable securities, unrealized loss	(343)	(7)
Short-term marketable securities	38,185	28,963
Long-term marketable securities, amortization cost	36,998	57,762
Unrealized gains, long-term securities	0	160
Long-term marketable securities, unrealized loss	(991)	(182)
Long-term marketable securities	36,007	57,740
Asset-Backed Securities [Member]
Short-term marketable securities, amortization cost	5	3,952
Unrealized gains, short-term securities	0	0
Short-term marketable securities, unrealized loss	0	0
Short-term marketable securities	5	3,952
Long-term marketable securities, amortization cost	23,310	14,941
Unrealized gains, long-term securities	3	6
Long-term marketable securities, unrealized loss	(170)	(36)
Long-term marketable securities	23,143	14,911
US Government Agencies Debt Securities [Member]
Short-term marketable securities, amortization cost	228,376	217,160
Unrealized gains, short-term securities	0	2
Short-term marketable securities, unrealized loss	(1,545)	(163)
Short-term marketable securities	226,831	216,999
Long-term marketable securities, amortization cost	21,137	37,664
Unrealized gains, long-term securities	0	0
Long-term marketable securities, unrealized loss	(165)	(136)
Long-term marketable securities	20,972	37,528
Foreign Government Agencies [Member]
Long-term marketable securities, amortization cost	1,007	1,007
Unrealized gains, long-term securities	0	12
Long-term marketable securities, unrealized loss	(4)	0
Long-term marketable securities	1,003	1,019
Cash [Member]
Cash and cash equivalents	84,920	61,220
Cash and cash equivalents	84,920
Money Market Funds [Member]
Cash and cash equivalents	35,046	75,258
Cash and cash equivalents	35,046
Commercial Paper [Member]
Cash and cash equivalents	999	$ 850
Cash and cash equivalents	999
Cash and cash equivalents, unrealized loss	$ 0

Note 2 - Fair Value of Financial Instruments - Fair Value Hierarchy (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Money market funds	$ 35,046	$ 75,258
Commercial paper	33,099	18,896
Corporate bonds	74,192	86,703
Asset-backed securities	23,148	18,863
U.S. Treasury and government agencies	247,803	254,527
Foreign government	1,003	1,019
Total	414,291	455,266
Fair Value, Inputs, Level 1 [Member]
Money market funds	35,046	75,258
Commercial paper	0	0
Corporate bonds	0	0
Asset-backed securities	0	0
U.S. Treasury and government agencies	0	0
Foreign government	0	0
Total	35,046	75,258
Fair Value, Inputs, Level 2 [Member]
Money market funds	0	0
Commercial paper	33,099	18,896
Corporate bonds	74,192	86,703
Asset-backed securities	23,148	18,863
U.S. Treasury and government agencies	247,803	254,527
Foreign government	1,003	1,019
Total	$ 379,245	$ 380,008

Note 2 - Fair Value of Financial Instruments - Summary of the Fair Value of Marketable Securities (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Available-for-sale Securities, Debt and Equity Maturities, Next Twelve Months, Fair Value	$ 299,123
Available-for-sale Securities, Debt and Equity Maturities, Year One through Two, Fair Value	57,621
Available-for-sale Securities, Debt and Equity Maturities, Year over two years, Fair Value	22,501
Debt Securities, Available-for-sale	379,245
Commercial Paper [Member]
Available-for-sale Securities, Debt and Equity Maturities, Next Twelve Months, Fair Value	33,099
Available-for-sale Securities, Debt and Equity Maturities, Year One through Two, Fair Value	0
Available-for-sale Securities, Debt and Equity Maturities, Year over two years, Fair Value	0
Debt Securities, Available-for-sale	33,099
Corporate Bond Securities [Member]
Available-for-sale Securities, Debt and Equity Maturities, Next Twelve Months, Fair Value	38,185
Available-for-sale Securities, Debt and Equity Maturities, Year One through Two, Fair Value	26,411
Available-for-sale Securities, Debt and Equity Maturities, Year over two years, Fair Value	9,596
Debt Securities, Available-for-sale	74,192
Asset-Backed Securities [Member]
Available-for-sale Securities, Debt and Equity Maturities, Next Twelve Months, Fair Value	5
Available-for-sale Securities, Debt and Equity Maturities, Year One through Two, Fair Value	10,238
Available-for-sale Securities, Debt and Equity Maturities, Year over two years, Fair Value	12,905
Debt Securities, Available-for-sale	23,148
US Government Agencies Debt Securities [Member]
Available-for-sale Securities, Debt and Equity Maturities, Next Twelve Months, Fair Value	226,831
Available-for-sale Securities, Debt and Equity Maturities, Year One through Two, Fair Value	20,972
Available-for-sale Securities, Debt and Equity Maturities, Year over two years, Fair Value	0
Debt Securities, Available-for-sale	247,803
Foreign Government Agencies [Member]
Available-for-sale Securities, Debt and Equity Maturities, Next Twelve Months, Fair Value	1,003
Available-for-sale Securities, Debt and Equity Maturities, Year One through Two, Fair Value	0
Available-for-sale Securities, Debt and Equity Maturities, Year over two years, Fair Value	0
Debt Securities, Available-for-sale	$ 1,003

Note 2 - Fair Value of Financial Instruments - Summary of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Foreign currency forward contracts	$ 7,177	$ 3,336
Foreign currency forward contracts	(1,276)	(388)
Designated as Hedging Instrument [Member]
Foreign currency forward contracts	3,260	1,737
Foreign currency forward contracts	(1,150)	(181)
Not Designated as Hedging Instrument [Member]
Foreign currency forward contracts	3,917	1,599
Foreign currency forward contracts	$ (126)	$ (207)

Note 2 - Fair Value of Financial Instruments - Amounts Recognized In Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net gains from non-designated forward contracts	$ 3,810	$ (41)	$ 4,965	$ 1,044
Other foreign currency transaction gains (losses)	(5,520)	30	(7,338)	(1,228)
Total foreign exchange losses, net	(1,710)	(11)	(2,373)	(184)
Other expenses	0	(69)	(47)	(140)
Other expense, net	$ (1,710)	$ (80)	$ (2,420)	$ (324)

Note 3 - Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Balance	$ 426,635	$ 436,714	$ 397,108	$ 404,482	$ 436,714	$ 404,482
Other comprehensive income (loss), net of tax	45	(1,677)	(385)	604	(1,632)	219
Balance	396,838	426,635	392,995	397,108	396,838	392,995
Balance	396,838	426,635	392,995	397,108	396,838	392,995
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance	(2,313)	(185)	835	1,224	(185)	1,224
Change in unrealized gains (losses) during the period	(933)	(2,070)	(273)	(501)
Net gains reclassified into income during the period	0	0	8	8
Income tax provision	0	(58)	63	104
Other comprehensive income (loss), net of tax	(933)	(2,128)	(202)	(389)
Balance	(3,246)	(2,313)	633	835	(3,246)	633
Balance	(3,246)	(2,313)	633	835	(3,246)	633
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	1,643	1,192	(715)	(1,708)	1,192	(1,708)
Change in unrealized gains (losses) during the period	1,548	648	(394)	1,092
Net gains reclassified into income during the period	(244)	(60)	152	192
Income tax provision	(326)	(137)	59	(291)
Other comprehensive income (loss), net of tax	978	451	(183)	993
Balance	2,621	1,643	(898)	(715)	2,621	(898)
Balance	2,621	1,643	(898)	(715)	2,621	(898)
AOCI Attributable to Parent [Member]
Balance	(670)	1,007	120	(484)	1,007	(484)
Change in unrealized gains (losses) during the period	615	(1,422)	(667)	591
Net gains reclassified into income during the period	(244)	(60)	160	200
Income tax provision	(326)	(195)	122	(187)
Other comprehensive income (loss), net of tax	45	(1,677)	(385)	604
Balance	(625)	(670)	(265)	120	(625)	(265)
Balance	$ (625)	$ (670)	$ (265)	$ 120	$ (625)	$ (265)

- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/exampleRef
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-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 4.E)
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Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
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-Paragraph 3
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Note 3 - Accumulated Other Comprehensive Income (Loss) - Amounts Reclassified from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Other income (expense), net	$ 1,710	$ 80	$ 2,420	$ 324
Revenues	119,893	99,702	233,313	196,458
Cost of revenues	25,046	21,552	49,048	43,232
Research and development	24,791	19,805	47,898	37,554
Sales and marketing	23,730	17,770	43,872	35,759
General and administrative	13,333	11,213	25,967	53,256
Reclassification out of Accumulated Other Comprehensive Income [Member] \| AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Other income (expense), net	0	(8)	0	(16)
Reclassification out of Accumulated Other Comprehensive Income [Member] \| Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Revenues	269	(456)	223	(673)
Cost of revenues	(6)	61	17	66
Research and development	(16)	204	52	221
Sales and marketing	(1)	12	3	13
General and administrative	(2)	27	9	29
Total	$ 244	$ (152)	$ 304	$ (344)

Note 4 - Property and Equipment, Net (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Property, Plant and Equipment, Net, Total	$ 57,830		$ 57,830		$ 61,854
Depreciation, Depletion And Amortization, Excluding Intangible Asset Amortization	6,900	$ 6,900	14,000	$ 14,200
Scanner Appliances and Other Computer Equipment Subject To Subscription [Member]
Property, Plant and Equipment, Net, Total	5,000		5,000		5,300
Scanner Appliances and Other Computer Equipment Not Placed In Service [Member]
Property, Plant and Equipment, Net, Total	$ 3,600		$ 3,600		$ 1,300

Note 4 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Property and equipment and finance lease	$ 240,777	$ 231,697
Less: accumulated depreciation and amortization	(182,947)	(169,843)
Property and equipment and finance lease, net	57,830	61,854
Computer Equipment [Member]
Property and equipment and finance lease	170,945	161,809
Computer Software, Intangible Asset [Member]
Property and equipment and finance lease	25,805	25,807
Leasehold Improvements [Member]
Property and equipment and finance lease	21,009	21,092
Scanner Appliances [Member]
Property and equipment and finance lease	16,584	16,510
Furniture and Fixtures [Member]
Property and equipment and finance lease	$ 6,434	$ 6,479

Note 5 - Revenue From Contracts With Customers (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Contract with Customer, Liability, Revenue Recognized	$ 75,900	$ 63,500	$ 175,900	$ 147,000
Amortization of Deferred Sales Commissions	1,200	900	2,400	1,800
Capitalized Contract Cost, Impairment Loss	$ 0	$ 0	$ 0	$ 0

Note 5 - Revenue From Contracts With Customers - Expected Revenue from All Remaining Performance Obligations (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Remaining performance obligations	$ 270,161

Note 5 - Revenue From Contracts With Customers - Expected Revenue from All Remaining Performance Obligations 2 (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Remaining performance obligations	$ 270,161
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Remaining performance obligations, period (Year)	6 months
Remaining performance obligations	$ 81,069
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Remaining performance obligations, period (Year)	1 year
Remaining performance obligations	$ 126,104
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Remaining performance obligations, period (Year)	1 year
Remaining performance obligations	$ 54,405
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Remaining performance obligations, period (Year)	1 year
Remaining performance obligations	$ 7,507
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Remaining performance obligations, period (Year)	1 year
Remaining performance obligations	$ 828
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Remaining performance obligations, period (Year)	1 year
Remaining performance obligations	$ 248

Note 5 - Revenue From Contracts With Customers - Revenue by Sales Channel (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues	$ 119,893	$ 99,702	$ 233,313	$ 196,458
Sales Channel, Directly to Consumer [Member]
Revenues	70,176	58,782	136,628	116,734
Sales Channel, Through Intermediary [Member]
Revenues	$ 49,717	$ 40,920	$ 96,685	$ 79,724

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
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+ Details

Note 5 - Revenue From Contracts With Customers - Capitalized Cost to Obtain Contracts, Current and Noncurrent (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current	$ 4,470	$ 4,223
Noncurrent	$ 8,727	$ 8,391

Note 6 - Intangible Assets, Net (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Amortization of Intangible Assets	$ 1.5	$ 1.6	$ 3.2	$ 3.3

Note 6 - Intangible Assets, Net - Carrying Value of Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Cost	$ 30,443	$ 30,443
Amortization of intangible assets	(27,118)	(23,938)
Net Book Value	3,325	6,505
Intangible assets, net	3,365	6,545
Intangible Assets Not Subject to Amortization [Member]
Intangible assets not subject to amortization	$ 40	$ 40
Developed Technology Rights [Member]
Weighted Average Life (Year)	4 years 6 months	4 years 6 months
Weighted Average Remaining Life (Year)	6 months	10 months 24 days
Cost	$ 28,556	$ 28,556
Amortization of intangible assets	(25,468)	(22,463)
Net Book Value	$ 3,088	$ 6,093
Patents [Member]
Weighted Average Life (Year)	14 years	14 years
Weighted Average Remaining Life (Year)	2 years 2 months 12 days	2 years 8 months 12 days
Cost	$ 1,387	$ 1,387
Amortization of intangible assets	(1,171)	(1,121)
Net Book Value	$ 216	$ 266
Noncompete Agreements [Member]
Weighted Average Life (Year)	2 years	2 years
Weighted Average Remaining Life (Year)	1 month 6 days	7 months 6 days
Cost	$ 500	$ 500
Amortization of intangible assets	(479)	(354)
Net Book Value	$ 21	$ 146

Note 6 - Intangible Assets, Net - Expected Amortization Expense in Future Periods (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
2022 (remaining six months)	$ 1,883
2023	590
2024	452
2025	240
2026	160
Total expected future amortization expense	$ 3,325	$ 6,505

Note 7 - Leases (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
Note 7 - Leases (Details Textual) - USD ($)	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating Lease, Expense	$ 3,800	$ 3,600	$ 7,300	$ 7,200

Note 7 - Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash payments included in the measurement of lease liabilities	$ 8,190	$ 6,853
Lease liabilities arising from obtaining right-of-use assets	$ 2,486	$ 1,179

Note 7 - Leases - Weighted Average Remaining Lease Term and Weighted Average Discount Rate (Details)	Jun. 30, 2022	Dec. 31, 2021
Weighted average remaining lease term (Year)	2 years 10 months 24 days	3 years 3 months 18 days
Weighted average discount rate	4.90%	4.80%

Note 9 - Stockholders' Equity and Stock-based Compensation (Details Textual) - USD ($) $ in Thousands					3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 08, 2022	Oct. 28, 2021	Jun. 09, 2021	Apr. 27, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Share-Based Payment Arrangement, Expense					$ 12,820	$ 8,553	$ 24,565	$ 46,755
Share-Based Payment Arrangement, Accelerated Cost								$ 27,300
Stock Repurchased and Retired During Period, Shares (in shares)							929,000	585,000
Stock Repurchased and Retired During Period, Value							$ 117,800	$ 63,300
Stock Repurchase Program, Remaining Authorized Repurchase Amount					354,000		354,000
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total					19,700		$ 19,700
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)							2 years 9 months 18 days
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total					70,000		$ 70,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)							2 years 8 months 12 days
Share-Based Payment Arrangement, Expense					1,100			$ 1,900
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)							190,000
Restricted Stock Units (RSUs) [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		33.33%
Share-Based Compensation, Percentage Of Shares That Will Vest Upon Trigger		100.00%
Performance-based Restricted Stock Units [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total					4,000		$ 4,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)							1 year 10 months 24 days
Performance-based Restricted Stock Units [Member] \| Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)		73,000
Share-Based Compensation, Percentage Of Shares That Will Vest Upon Trigger		100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		3 years
Share-based Compensation Termination Period Trigger (Month)		12 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)									34,000
Performance-based Restricted Stock Units [Member] \| President and Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)				9,671
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)				3 years
ESPP Shares [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total					$ 200		$ 200
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)							1 month 6 days
Minimum [Member] \| Restricted Stock Units (RSUs) [Member] \| Performance Shares, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Target Percentage		0.00%
Minimum [Member] \| Performance-based Restricted Stock Units [Member] \| President and Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Target Percentage				0.00%
Maximum [Member] \| Restricted Stock Units (RSUs) [Member] \| Performance Shares, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Target Percentage		200.00%
Maximum [Member] \| Performance-based Restricted Stock Units [Member] \| President and Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Target Percentage				200.00%
The 2012 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)	3,072,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)					3,089,000		3,089,000
The 2021 Employee Stock Purchase Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)					577,500		577,500
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)			600,000
Share-based Compensation Arrangement by Share-based Payment Award, Offering Period (Month)			6 months
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent			85.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)							22,500
The 2021 Employee Stock Purchase Plan [Member] \| Minimum [Member]
Employee Stock Purchase Plan, Percentage of Eligible Compensation Contributable			1.00%
The 2021 Employee Stock Purchase Plan [Member] \| Maximum [Member]
Employee Stock Purchase Plan, Percentage of Eligible Compensation Contributable			15.00%

Note 9 - Stockholders' Equity and Stock-based Compensation - Summary of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Stock-based compensation	$ 12,820	$ 8,553	$ 24,565	$ 46,755
Cost of Sales [Member]
Stock-based compensation	1,273	841	2,355	1,716
Research and Development Expense [Member]
Stock-based compensation	3,541	2,582	6,828	4,797
Selling and Marketing Expense [Member]
Stock-based compensation	2,305	1,086	4,334	2,714
General and Administrative Expense [Member]
Stock-based compensation	$ 5,701	$ 4,044	$ 11,048	$ 37,528

Note 9 - Stockholders' Equity and Stock-based Compensation - Share-based Compensation and Stock Options Activity (Details)
$ / shares in Units, shares in Thousands, $ in Thousands

6 Months Ended

12 Months Ended

Jun. 30, 2022

USD ($)

$ / shares

Dec. 31, 2021

USD ($)

$ / shares

Balance (in shares) | shares

1,838

Weighted average exercise price, balance (in dollars per share) | $ / shares

$ 66.05

Weighted Average Remaining Contractual Life Balance (Year)

6 years 2 months 12 days

6 years

Aggregate intrinsic value | $

$ 91,404

$ 130,791

Granted (in shares) | shares

278

Weighted average exercise price, Granted (in dollars per share) | $ / shares

$ 135.01

Exercised (in shares) | shares

(212)

^[1]

Weighted average exercise price, Exercised (in dollars per share) | $ / shares

$ 42.72

Canceled (in shares) | shares

(89)

Weighted average exercise price, Canceled (in dollars per share) | $ / shares

$ 111.97

Balance (in shares) | shares

1,815

1,838

Weighted average exercise price, balance (in dollars per share) | $ / shares

$ 77.08

$ 66.05

Vested and expected to vest (in shares) | shares

1,618

Weighted average exercise price, Vested and expected to vest (in dollars per share) | $ / shares

$ 71.75

Vested and Expected to vest, weighted average remaining contractual life (Year)

5 years 10 months 24 days

Vested and Expected to vest, aggregate intrinsic value | $

$ 89,608

Exercisable (in shares) | shares

1,087

Weighted average exercise price, Exercisable (in dollars per share) | $ / shares

$ 49.76

Exercisable, weighted average remaining contractual life (Year)

4 years 4 months 24 days

Exercisable, aggregate intrinsic value | $

$ 83,037

[1]	Included 348 thousand shares of PSOs.

Note 9 - Stockholders' Equity and Stock-based Compensation - Share-based Compensation, Restricted Stock and Restricted Stock Units (Details)
shares in Thousands

6 Months Ended

Jun. 30, 2022

$ / shares

Cancelled, weighted average grant date fair value (in dollars per share) | $ / shares

$ 116.12

Expected to vest, number of shares (in shares) | shares

749

Expected to vest, weighted average grant date fair value (in dollars per share) | $ / shares

$ 110.04

Restricted Stock Units (RSUs) [Member]

Balance, number of shares (in shares) | shares

917

^[1]

Balance, weighted average grant date fair value (in dollars per share) | $ / shares

$ 104.78

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | shares

190

Granted, weighted average grant date fair value (in dollars per share) | $ / shares

$ 137.19

Vested, number of shares (in shares) | shares

(160)

Vested, weighted average grant date fair value (in dollars per share) | $ / shares

$ 98.01

Cancelled, number of shares (in shares) | shares

(83)

Balance, number of shares (in shares) | shares

864

^[1]

Balance, weighted average grant date fair value (in dollars per share) | $ / shares

$ 111.89

[1]	Includes 34 thousand PSUs granted to certain executive officers in 2021.

Note 9 - Stockholders' Equity and Stock-based Compensation - Schedule of Repurchase Agreements (Details) - USD ($) $ in Billions	Jun. 30, 2022	May 04, 2022	Nov. 03, 2021	Feb. 10, 2021	May 07, 2020	Oct. 30, 2019	Oct. 30, 2018	Feb. 12, 2018
Authorized Dollar Value	$ 0.9							$ 0.1
Additional Authorized Dollar Value		$ 0.2	$ 0.2	$ 0.1	$ 0.1	$ 0.1	$ 0.1

Note 10 - Net Income Per Share - Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Net income	$ 26,596	$ 25,410	$ 21,142	$ 228	$ 52,006	$ 21,370
Basic weighted average shares (in shares)	38,738		39,099		38,864	39,154
Stock options (in shares)	719		831		744	851
Restricted stock units (in shares)	230		147		233	248
Employee stock purchase plan (in shares)	2		0		3	0
Diluted weighted average shares (in shares)	39,689		40,077		39,844	40,253
Basic (in dollars per share)	$ 0.69		$ 0.54		$ 1.34	$ 0.55
Diluted (in dollars per share)	$ 0.67		$ 0.53		$ 1.31	$ 0.53

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Note 10 - Net Income Per Share - Anti-dilutive Net Income Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Antidilutive securities (in shares)	776	828	693	620
Share-Based Payment Arrangement, Option [Member]
Antidilutive securities (in shares)	688	675	645	524
Restricted Stock Units (RSUs) [Member]
Antidilutive securities (in shares)	88	153	44	96
Employee Stock Purchase Plan Shares [Member]
Antidilutive securities (in shares)	0	0	4	0

Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Income Tax Expense (Benefit), Total	$ 5,526	$ 8,707	$ 13,459	$ 6,272
Effective Income Tax Rate Reconciliation, Percent, Total	17.20%	29.20%	20.60%	22.70%
Unrecognized Tax Benefits, Ending Balance	$ 10,100		$ 10,100		$ 9,700
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 5,100		$ 5,100		$ 4,900

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

Note 12 - Segment Information and Information About Geographic Area (Details Textual)	6 Months Ended
	Jun. 30, 2022
Number of Operating Segments	1
Number of Reportable Segments	1

Note 12 - Segment Information and Information About Geographic Area - Revenue and Property and Equipment, Net by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Revenues	$ 119,893	$ 99,702	$ 233,313	$ 196,458
Property and equipment, net and Operating leases - right of use asset	91,281		91,281		$ 98,870
UNITED STATES
Revenues	71,608	60,991	139,084	121,123
Property and equipment, net and Operating leases - right of use asset	62,655		62,655		66,440
INDIA
Property and equipment, net and Operating leases - right of use asset	19,270		19,270		20,401
Non-US [Member]
Revenues	48,285	$ 38,711	94,229	$ 75,335
Other Geographic Areas [Member]
Property and equipment, net and Operating leases - right of use asset	$ 9,356		$ 9,356		$ 12,029

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+ Details