Integral Ad Science Holding (IAS) 10-Q 1 Aug 24 2024 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2024	Jul. 29, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-40557
Entity Registrant Name	INTEGRAL AD SCIENCE HOLDING CORP.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	83-0731995
Entity Address, Address Line One	12 E 49th Street,
Entity Address, Address Line Two	20th Floor
Entity Address, City or Town	New York,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10017
City Area Code	646
Local Phone Number	278-4871
Title of 12(b) Security	Common Stock, $0.001 par value per share
Trading Symbol	IAS
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		161,364,929
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Entity Central Index Key	0001842718
Current Fiscal Year End Date	--12-31

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 70,603	$ 124,759
Restricted cash	275	54
Accounts receivable, net	75,233	74,609
Unbilled receivables	45,320	46,548
Prepaid expenses and other current assets	38,251	18,959
Total current assets	229,682	264,929
Property and equipment, net	4,076	3,769
Internal use software, net	47,578	40,301
Intangible assets, net	159,825	178,908
Goodwill	674,350	675,282
Operating lease right-of-use assets	21,223	21,668
Deferred tax asset, net	2,438	2,465
Other long-term assets	4,950	4,402
Total assets	1,144,122	1,191,724
Current liabilities:
Accounts payable and accrued expenses	51,096	72,232
Operating lease liability	9,483	9,435
Due to related party	0	121
Deferred revenue	558	682
Total current liabilities	61,137	82,470
Deferred tax liability, net	16,884	20,367
Long-term debt	93,957	153,725
Operating lease liabilities, non-current	18,397	19,523
Other long-term liabilities	6,171	6,183
Total liabilities	196,546	282,268
Commitments and Contingencies (Note 13)
Stockholders’ Equity
Preferred Stock, $0.001 par value, 50,000,000 shares authorized at June 30, 2024; 0 shares issued and outstanding at June 30, 2024 and December 31, 2023.	0	0
Common Stock, $0.001 par value, 500,000,000 shares authorized, 160,786,740 and 158,757,620 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively.	161	159
Additional paid-in-capital	934,194	901,259
Accumulated other comprehensive loss	(2,168)	(916)
Retained earnings	15,389	8,954
Total stockholders’ equity	947,576	909,456
Total liabilities and stockholders’ equity	$ 1,144,122	$ 1,191,724

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares	Jun. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares, issued (in shares)	160,786,740	158,757,620
Common stock, shares, outstanding (in shares)	160,786,740	158,757,620

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Revenue	$ 129,005	$ 113,651	$ 243,535	$ 219,743
Operating expenses:
Cost of revenue (excluding depreciation and amortization shown below)	27,094	23,819	53,255	45,501
Sales and marketing	29,572	31,702	61,397	57,962
Technology and development	17,487	21,110	35,465	36,639
General and administrative	24,679	42,339	46,059	63,062
Depreciation and amortization	15,709	13,521	30,789	26,346
Foreign exchange loss (gain), net	315	(631)	1,884	(1,147)
Total operating expenses	114,856	131,860	228,849	228,363
Operating income (loss)	14,149	(18,209)	14,686	(8,620)
Interest expense, net	(1,536)	(3,221)	(3,462)	(6,638)
Net income (loss) before income taxes	12,613	(21,430)	11,224	(15,258)
(Provision) benefit for income taxes	(4,923)	29,107	(4,789)	26,081
Net income	$ 7,690	$ 7,677	$ 6,435	$ 10,823
Net income per share - basic (in dollars per share)	$ 0.05	$ 0.05	$ 0.04	$ 0.07
Net income per share - diluted (in dollars per share)	$ 0.05	$ 0.05	$ 0.04	$ 0.07
Weighted average shares outstanding:
Basic (in shares)	160,502,795	155,425,264	159,954,926	155,267,531
Diluted (in shares)	163,748,596	162,634,310	164,198,233	160,850,434
Other comprehensive income:
Foreign currency translation adjustments	$ (193)	$ (221)	$ (1,252)	$ 928
Total comprehensive income	$ 7,497	$ 7,456	$ 5,183	$ 11,751

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional paid-in capital	Accumulated other comprehensive loss	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment
Beginning balance (in shares) at Dec. 31, 2022			153,990,128
Beginning balance at Dec. 31, 2022	$ 808,216	$ 941	$ 154	$ 810,186	$ (2,899)	$ 775	$ 941
Increase (Decrease) in Stockholders' Equity [Roll Forward]
RSUs and MSUs vested (in shares)			1,590,282
RSUs and MSUs vested	2		$ 2
Option exercises (in shares)			587,502
Option exercises	4,993			4,993
ESPP purchase (in shares)			111,163
ESPP purchase	882			882
Stock-based compensation	51,429			51,429
Foreign currency translation adjustment	928				928
Net income	10,823					10,823
Ending balance (in shares) at Jun. 30, 2023			156,279,075
Ending balance at Jun. 30, 2023	878,214		$ 156	867,490	(1,971)	12,539
Beginning balance (in shares) at Mar. 31, 2023			154,811,980
Beginning balance at Mar. 31, 2023	827,764		$ 154	824,498	(1,750)	4,862
Increase (Decrease) in Stockholders' Equity [Roll Forward]
RSUs and MSUs vested (in shares)			1,218,542
RSUs and MSUs vested	2		$ 2
Option exercises (in shares)			248,553
Option exercises	2,878			2,878
Stock-based compensation	40,114			40,114
Foreign currency translation adjustment	(221)				(221)
Net income	7,677					7,677
Ending balance (in shares) at Jun. 30, 2023			156,279,075
Ending balance at Jun. 30, 2023	$ 878,214		$ 156	867,490	(1,971)	12,539
Beginning balance (in shares) at Dec. 31, 2023	158,757,620		158,757,620
Beginning balance at Dec. 31, 2023	$ 909,456		$ 159	901,259	(916)	8,954
Increase (Decrease) in Stockholders' Equity [Roll Forward]
RSUs and MSUs vested (in shares)			1,831,832
RSUs and MSUs vested	2		$ 2
Option exercises (in shares)			44,049
Option exercises	313			313
ESPP purchase (in shares)			153,239
ESPP purchase	1,895			1,895
Stock-based compensation	30,727			30,727
Foreign currency translation adjustment	(1,252)				(1,252)
Net income	$ 6,435					6,435
Ending balance (in shares) at Jun. 30, 2024	160,786,740		160,786,740
Ending balance at Jun. 30, 2024	$ 947,576		$ 161	934,194	(2,168)	15,389
Beginning balance (in shares) at Mar. 31, 2024			159,761,454
Beginning balance at Mar. 31, 2024	925,076		$ 160	919,192	(1,975)	7,699
Increase (Decrease) in Stockholders' Equity [Roll Forward]
RSUs and MSUs vested (in shares)			1,025,286
RSUs and MSUs vested	1		$ 1
Stock-based compensation	15,002			15,002
Foreign currency translation adjustment	(193)				(193)
Net income	$ 7,690					7,690
Ending balance (in shares) at Jun. 30, 2024	160,786,740		160,786,740
Ending balance at Jun. 30, 2024	$ 947,576		$ 161	$ 934,194	$ (2,168)	$ 15,389

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net income	$ 6,435	$ 10,823
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	30,789	26,346
Stock-based compensation	30,742	51,741
Foreign currency loss (gain), net	1,564	(1,239)
Deferred tax benefit	(3,456)	(37,535)
Amortization of debt issuance costs	232	232
Allowance for credit losses	745	1,254
Changes in operating assets and liabilities:
Increase in accounts receivable	(2,070)	(4,483)
Decrease in unbilled receivables	998	2,272
(Increase) decrease in prepaid expenses and other current assets	(19,548)	12,619
(Increase) decrease in operating leases, net	(618)	25
(Increase) decrease in other long-term assets	(557)	4
Decrease in accounts payable and accrued expenses and other long-term liabilities	(20,221)	(10,225)
(Decrease) increase in deferred revenue	(111)	350
Decrease in due to/from related party	(122)	(118)
Net cash provided by operating activities	24,802	52,066
Cash flows from investing activities:
Purchase of property and equipment	(1,323)	(1,810)
Development of internal use software and other	(18,836)	(14,928)
Net cash used in investing activities	(20,159)	(16,738)
Cash flows from financing activities:
Proceeds from the Revolver	0	75,000
Repayment of long-term debt	(60,000)	(105,000)
Proceeds from exercise of stock options	313	4,993
Cash received from Employee Stock Purchase Program	2,213	1,409
Net cash used in financing activities	(57,474)	(23,598)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(52,831)	11,730
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(1,084)	(142)
Cash, cash equivalents and restricted cash at beginning of period	127,290	89,671
Cash, cash equivalents, and restricted cash, at end of period	73,375	101,259
Net cash paid during the period for:
Interest	3,614	5,862
Taxes	19,925	5,609
Non-cash investing and financing activities:
Lease liabilities arising from right of use assets	5,278	3,902
Property and Equipment, net
Non-cash investing and financing activities:
Assets acquired included in accounts payable	108	140
Software Development
Non-cash investing and financing activities:
Assets acquired included in accounts payable	$ 661	$ 1,159

Description of business

Description of business	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of business	Description of business Integral Ad Science Holding Corp. and its wholly-owned subsidiaries (together, the “Company” or "IAS"), is a leading global digital advertising verification company by revenue. The Company’s mission is to be the global benchmark for trust and transparency in digital media quality for the world’s leading brands, publishers, and platforms. The Company’s cloud-based technology platform provides actionable insights and delivers independent measurement and verification of digital advertising across all devices, channels, and formats, including desktop, mobile, connected TV (“CTV”), social, display, and video. The Company’s proprietary and Media Rating Council (the "MRC") accredited Quality Impressions ® metric is designed to verify that digital ads are served to a real person rather than a bot, in a brand-safe and suitable environment within the correct geography. The Company is an independent, trusted partner for buyers and sellers of digital advertising to increase accountability, transparency, and effectiveness in the market. The Company helps advertisers optimize their ad spend and better measure consumer engagement with campaigns across platforms, while enabling publishers to improve their inventory yield and revenue. The Company operates within the United States ("U.S.") in New York, California, and Illinois. Operations outside the U.S. include but are not limited to countries such as the United Kingdom ("U.K."), Ireland, France, Germany, Spain, Italy, Singapore, Australia, Japan, India, and the Nordics.

Basis of presentation and summa

Basis of presentation and summary of significant accounting policies	6 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Basis of presentation and summary of significant accounting policies	Basis of presentation and summary of significant accounting policies This summary of significant accounting policies is presented to assist in understanding the Company’s condensed consolidated financial statements. These accounting policies have been consistently applied in the preparation of the condensed consolidated financial statements. (a) Basis of presentation The Company’s condensed consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and reflect the financial position, results of operations and cash flows for all periods presented. The year-end condensed balance sheet data was derived from audited financial statements but does not include all disclosures required by U.S. GAAP. The accompanying interim Condensed Consolidated Balance Sheets as of June 30, 2024, the Condensed Consolidated Statements of Operations and Comprehensive Income, of Cash Flows and of Changes in Stockholders’ Equity for the three and six months ended June 30, 2024 and 2023, and the related footnote disclosures are unaudited. These unaudited interim condensed consolidated financial statements have been prepared on the same basis as the annual consolidated financial statements and, in management’s opinion, include all adjustments necessary to state fairly the consolidated financial position of the Company. All adjustments made were of a normal recurring nature. The results for the three and six months ended June 30, 2024 are not necessarily indicative of the results to be expected for the year ending December 31, 2024, or for any future period. The Company’s significant accounting policies are discussed in Note 2 to the consolidated financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2023, filed with the Securities and Exchange Commission (“SEC”) on February 27, 2024 (the "2023 Form 10-K") and these unaudited condensed consolidated financial statements should be read in conjunction with the 2023 Form 10-K. During the first quarter of 2024, the Company identified an immaterial error in its previously issued unaudited condensed consolidated financial statements for the three months ended March 31, 2023, six months ended June 30, 2023 and nine months ended September 30, 2023. Specifically, lease liabilities arising from right of use assets within the non-cash investing and financing supplemental disclosure included all leases rather than leases arising during the noted period. As a result, the six months ended June 30, 2023 disclosure within the Statement of Cash Flows was revised from $30.4 million to $3.9 million. The nine months ended September 30, 2023 disclosure will be revised from $29.3 million to $4.9 million in our Form 10-Q for the quarter ended September 30, 2024 to be filed later this year. These revisions did not impact any other amounts presented in the condensed consolidated financial statements. (b) Basis of consolidation The condensed consolidated financial statements include the accounts of Integral Ad Science Holding Corp. and its wholly-owned subsidiaries. All material intercompany accounts and transactions have been eliminated in consolidation. (c) Use of estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates. Significant estimates include the estimated useful lives of intangible assets and internal use software, the allowance for credit losses, goodwill impairment testing, assumptions used to calculate equity-based compensation, and the realization of deferred tax assets. The Company bases its estimates on past experience, market conditions, and other assumptions that the Company believes are reasonable under the circumstances, and the Company evaluates these estimates on an ongoing basis. Actual results may differ from these estimates due to risks and uncertainties, including the continued uncertainty surrounding rapidly changing market and economic conditions due to heightened inflation, changes to fiscal and monetary policy, higher interest rates, currency fluctuations, instability in the financial markets and disruptions in European economies as a result of the war in Ukraine and other geopolitical issues. (d) Foreign currency The reporting currency of the Company is the U.S. dollar. The functional currency of our foreign subsidiaries is the currency of the primary economic environment in which they operate, which is their local currency. The financial statements of these subsidiaries are translated into U.S. dollars using month-end rates of exchange for assets and liabilities, and average rates of exchange for revenue, costs and expenses. Translation gains and losses are recorded in accumulated other comprehensive income within stockholders’ equity. Transaction gains and losses including those on intercompany transactions denominated in a currency other than the functional currency of the entity involved are included in foreign exchange loss (gain), net in the Condensed Consolidated Statements of Operations and Comprehensive Income. For the three months ended June 30, 2024, and 2023, foreign exchange gain (loss), net consists of unrealized foreign exchange losses of $169 and gains of $561, respectively, and realized transaction losses of $146 and gains of $70, respectively. For the six months ended June 30, 2024, and 2023, foreign exchange gain (loss), net consists of unrealized foreign exchange losses of $1,564 and gains of $1,239, respectively, and realized transaction losses of $320 and $92, respectively. (e) Cash, cash equivalents, and restricted cash Cash equivalents include money market accounts and other highly liquid investments with an original maturity date of three months or less at the time of purchase. Cash amounts with restrictions are classified as restricted cash within the Condensed Consolidated Balance Sheets. The Company generated interest income of $726 and $752 during the three months ended June 30, 2024, and 2023, respectively, and $1,680 and $1,280 during the six months ended June 30, 2024, and 2023, respectively. The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets to the amounts shown in the Condensed Consolidated Statements of Cash Flows. June 30, 2024 December 31, 2023 Cash and cash equivalents $ 70,603 $ 124,759 Short-term restricted cash 275 54 Long-term restricted cash (held in other long-term assets) 2,497 2,477 Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows $ 73,375 $ 127,290 (f) Accounts receivable, net Accounts receivable are carried at the original invoiced amount less an allowance for credit losses. The allowance is estimated by pooling accounts receivables based on similar risk characteristics, and expected credit loss exposure is evaluated for each accounts receivable pool. Invoices are typically issued with net 30-days to net 90-days terms. Account balances are considered delinquent if payment is not received by the due date, and the receivables are written off when deemed uncollectible. These costs are recorded in general and administrative expenses within the Condensed Consolidated Statements of Operations and Comprehensive Income. The activity in our allowance for credit losses consists of the following as of: June 30, 2024 June 30, 2023 Balance, beginning of period $ 8,645 $ 6,691 Additional provision 745 1,254 Receivables written off and impact of exchange rates (114) 92 Adoption of ASC 326 — (1,271) Balance, end of period $ 9,276 $ 6,766 (g) Stock-based compensation Stock-based compensation is measured at the grant date based on the fair value of the award and is recognized as expense over the requisite service period, which is generally the vesting period. The Company accounts for forfeitures as they occur. The Company used the following assumptions in valuing its market stock units ("MSUs"), shares granted under the Company's 2021 Employee Stock Purchase Program ("ESPP"), time-based service options, which vest over a period of time subject to continued employment ("Time-Based Options"), and return-target options ("Return-Target Options"), which vest upon a realized cash return of the equity investment of funds affiliated with Vista Equity Partners ("Vista"), the Company’s largest shareholder. Expected term — For time-based awards, the estimated expected term of options granted is generally calculated as the vesting period plus the midpoint of the remaining contractual term, as the Company does not have sufficient historical information to develop reasonable expectations surrounding future exercise patterns and post-vesting employment termination behavior. For awards subject to market and performance conditions, the expected term represents the period of time that the options granted are expected to be outstanding. Expected volatility — Volatility is estimated based upon observed option-implied volatilities for the Company in addition to a group of peer companies. The Company believes this is the best estimate of the expected volatility over the weighted-average expected term of its option grants. Risk-free interest rate — The risk-free interest rate is based on the implied yield currently available on U.S. Treasury instruments with terms approximately equal to the expected term of the option. Expected dividend — The expected dividend assumption was based on the Company’s history and expectation of dividend payouts. The Company currently has no history or expectation of paying cash dividends on its common stock. Fair value — Following the pricing of the Initial Public Offering, the Company’s shares have traded publicly, and accordingly the Company uses the applicable closing price of its common stock to determine fair value. The Company used the following assumptions in valuing its stock-based compensation: June 30, 2024 June 30, 2023 Estimated fair value $4.47 - $14.86 $3.35 - $21.05 Expected volatility (%) 50% - 66% 60% - 65% Expected term (in years) 0.50 - 4.00 0.50 - 4.00 Risk-free interest rate (%) 4.26% - 5.15% 3.63% - 4.79% Dividend yield — — (h) Accounting pronouncements not yet adopted On November 27, 2023, the FASB issued ASU 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures," which requires incremental disclosures related to an entity's reportable segments. This ASU is effective for annual periods beginning after December 15, 2023. The Company does not expect the adoption of ASU 2023-07 to have a material impact on its consolidated financial statements. On December 14, 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures," which requires companies to disclose more detailed information in their reconciliation of their statutory tax rate to their effective tax rate. The ASU also requires entities to disclosure more detailed information about income taxes paid, including by jurisdiction, pretax income (or loss) from continuing operations and income tax expense (or benefit). This ASU is effective for annual periods, including interim periods within those annual periods, beginning after December 15, 2024. The Company is currently evaluating the impact of the adoption of ASU No. 2023-09 on its consolidated financial statements.

Property and equipment, net

Property and equipment, net	6 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Property and equipment, net	Property and equipment, net Property and equipment consisted of the following: Estimated June 30, 2024 December 31, 2023 Computer and office equipment 1 - 3 years $ 4,737 $ 4,070 Computer software 3 - 5 years 218 218 Leasehold improvements Various 2,814 2,535 Furniture 5 years 581 585 Total property and equipment 8,350 7,408 Less: accumulated depreciation (4,274) (3,639) Total property and equipment, net $ 4,076 $ 3,769

Internal use software, net

Internal use software, net	6 Months Ended
	Jun. 30, 2024
Internal Use Software [Abstract]
Internal use software, net	Internal use software, net Internal use software consisted of the following: Estimated June 30, 2024 December 31, 2023 Internal use software 3 - 5 years $ 88,185 $ 69,797 Less: asset impairments — (33) Less: accumulated amortization (40,607) (29,463) Total internal use software, net $ 47,578 $ 40,301

Intangible assets, net

Intangible assets, net	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, net	Intangible assets, net The gross book value, accumulated amortization, net book value and amortization periods of the intangible assets were as follows: June 30, 2024 Estimated Gross book Accumulated Net book value Weighted Customer relationships 5 - 15 years $ 301,964 $ (156,652) $ 145,312 8.1 years Developed technology 5 years 137,166 (128,494) 8,672 2.2 years Trademarks 5 - 9 years 19,700 (13,860) 5,840 2.9 years Favorable leases 6 years 198 (197) 1 0.1 years Total $ 459,028 $ (299,203) $ 159,825 December 31, 2023 Estimated Gross book Accumulated Net book value Weighted Customer relationships 5 - 15 years $ 301,994 $ (142,135) $ 159,859 8.6 years Developed technology 5 years 137,361 (125,426) 11,935 2.6 years Trademarks 5 - 9 years 19,700 (12,604) 7,096 3.4 years Favorable leases 6 years 198 (180) 18 0.5 years Total $ 459,253 $ (280,345) $ 178,908

Goodwill

Goodwill	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill The following table provides a roll forward of the changes in the goodwill balance: Goodwill as of December 31, 2023 $ 675,282 Impact of exchange rates (932) Goodwill as of June 30, 2024 $ 674,350

Accounts payable and accrued ex

Accounts payable and accrued expenses and other long-term liabilities	6 Months Ended
	Jun. 30, 2024
Payables and Accruals [Abstract]
Accounts payable and accrued expenses and other long-term liabilities	Accounts payable and accrued expenses and other long-term liabilities Accounts payable and accrued expenses consisted of the following: June 30, 2024 December 31, 2023 Accounts payable $ 9,856 $ 12,092 Accrued payroll 5,309 9,250 Accrued professional fees 3,209 3,281 Accrued bonuses and commissions 12,444 20,413 Accrued revenue sharing 4,588 4,136 Taxes payable 2,440 6,436 Accrued hosting fees 4,759 9,475 Other accrued expenses 8,491 7,149 Total accounts payable and accrued expenses $ 51,096 $ 72,232 Other long-term liabilities consisted of the following: June 30, 2024 December 31, 2023 Security deposit received $ 672 $ 672 Uncertain tax positions 5,499 5,511 Total other long-term liabilities $ 6,171 $ 6,183

Long-term debt

Long-term debt	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Long-term debt	Long-term debt On September 29, 2021, the Company entered into a credit agreement with various lenders, which was amended on June 23, 2023 (as amended, the "Credit Agreement”). The Credit Agreement provides for an initial $300,000 in commitments for revolving credit loans (the “Revolver”), which amount may be increased or decreased under specific circumstances, with a $30,000 letter of credit sublimit and a $100,000 alternative currency sublimit. In addition, the Credit Agreement provides for the ability to request incremental term loan facilities, in a minimum amount of $5,000 for each facility. Borrowings pursuant to the Credit Agreement may be used for working capital and other general corporate purposes, including for acquisitions permitted under the Credit Agreement. During the six months ended June 30, 2024, the Company paid down $60,000 on the Revolver. Borrowings under the Credit Agreement are scheduled to mature on September 29, 2026. The Credit Agreement contains certain customary events of default including failure to make payments when due thereunder, and failure to observe or perform certain covenants. In connection with the entry into the Revolver, the Company incurred costs of $2,318 that are included in Long-term debt, net, in the Condensed Consolidated Balance Sheets. The interest rates for the Revolver under the Credit Agreement (i) for U.S. dollar loans are equal to the applicable rate for base rate loans ranging from 0.75% to 1.50% per annum, (ii) for Term SOFR Loans (as defined in the Credit Agreement) ranging from 1.75% to 2.50% per annum, (iii) for RFR Loans (as defined in the Credit Agreement) denominated in sterling ranging from 1.7826% to 2.5326%, and (iv) for RFR Loans denominated in euro range from 1.7956% to 2.5456%, in each case, based on the Senior Secured Net Leverage Ratio (as defined in the Credit Agreement). Base rate borrowings may only be made in dollars. The Company is required to pay a commitment fee during the term of the Credit Agreement ranging from 0.20% to 0.35% per annum of the average daily undrawn portion of the revolving commitments based on the Senior Secured Net Leverage Ratio. The interest rate on June 30, 2024 was 7.4%. Any borrowings under the Credit Agreement may be repaid, in whole or in part, at any time and from time to time without premium or penalty other than customary breakage costs, and any amounts repaid may be reborrowed. No mandatory prepayments will be required other than when borrowings and letter of credit usage exceed the aggregate commitment of all lenders. The Credit Agreement contains covenants requiring certain financial information to be submitted quarterly and annually. In addition, the Company is also required to comply with certain financial covenants such as maintaining a Total Net Leverage Ratio (as defined in the Credit Agreement) of 3.50 to 1.00 or lower and maintaining a minimum Interest Coverage Ratio (as defined in the Credit Agreement) of 2.50 to 1.00. As of June 30, 2024, the Company was in compliance with all covenants contained in the Credit Agreement. June 30, 2024 December 31, 2023 Revolver $ 95,000 $ 155,000 Less: unamortized debt issuance costs (1,043) (1,275) Total carrying amount $ 93,957 $ 153,725 Amortization of debt issuance costs for the three months ended June 30, 2024 and 2023 was $116 in both periods. Amortization of debt issuance costs for the six months ended June 30, 2024 and 2023 was $232 in both periods. Amortization of debt issuance costs is recorded to interest expense, net on the Company's Condensed Consolidated Statements of Operations and Comprehensive Income. The Company recognized interest expense of $2,146 and $3,857 during the three months ended June 30, 2024 and 2023, respectively. The Company recognized interest expense of $4,911 and $7,687 during the six months ended June 30, 2024 and 2023, respectively. Future principal payments of long-term debt as of June 30, 2024 are as follows: Year Ending 2024 $ — 2025 — 2026 95,000 $ 95,000

Income taxes

Income taxes	6 Months Ended
	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Income taxes	Income taxes At the end of each interim period, the Company estimates the annual expected effective income tax rate and applies that rate to its ordinary year-to-date earnings or loss. The income tax provision or benefit related to significant, unusual, or extraordinary items, if applicable, that will be separately reported or reported net of their related tax effects are individually computed and recognized in the interim period in which they occur. In addition, the effect of changes in enacted tax laws or rates, tax status, judgment on the realizability of a beginning-of-the-year deferred tax asset in future years or unrecognized tax benefits is recognized in the interim period in which the change occurs. The computation of the annual expected effective income tax rate at each interim period requires certain estimates and assumptions including, but not limited to, the expected pre-tax income (or loss) for the year, projections of the proportion of income (and/or loss) earned and taxed in foreign jurisdictions, permanent and temporary differences, and the likelihood of the realization of deferred tax assets generated in the current year. The accounting estimates used to compute the provision or benefit for income taxes may change as new events occur, more experience is acquired, additional information is obtained or the Company’s tax environment changes. To the extent that the expected annual effective income tax rate changes during a quarter, the effect of the change on prior quarters is included in income tax provision in the quarter in which the change occurs. For the three months ended June 30, 2024 and 2023, the Company recorded an income tax provision of $4,923 and income tax benefit of $29,107, respectively. The Company’s effective tax rate for the three months ended June 30, 2024 and 2023 was 39.0% and 135.8%, respectively. The Company's effective tax rate for the three months ended June 30, 2024 is lower than for the respective three months ended June 30, 2023, primarily due to non-deductible stock-based compensation, tax credits and other permanent tax differences and discrete items. For the six months ended June 30, 2024 and 2023, the Company recorded an income tax provision of $4,789 and income tax benefit of $26,081, respectively. The Company’s effective tax rate for the six months ended June 30, 2024 and 2023 was 42.7% and 170.9%, respectively. The Company's effective tax rate for the six months ended June 30, 2024 is lower than the six months ended June 30, 2023, primarily due to non-deductible executive compensation, tax credits and other permanent tax differences and discrete items. The Company recognizes interest and, if applicable, penalties related to unrecognized tax benefits in the income tax provision. The Company is under examination in various states for the 2021 tax year. We believe that we have made adequate provision for all income tax uncertainties that could result from the examination.

Segment data

Segment data	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Segment data	Segment data Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker (“CODM”), in deciding how to allocate resources and in assessing performance. The Company’s Chief Executive Officer is the CODM. The Company manages its operations as a single segment for the purpose of assessing and making operating decisions. The CODM allocates resources and assesses performance based upon financial information at the consolidated level. Since the Company operates in one operating segment, all required financial segment information can be found in the condensed consolidated financial statements. The following table summarizes revenue by geographic area: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 North and South America (“Americas”) $ 88,874 $ 78,990 $ 167,393 $ 153,191 Europe, Middle East and Africa (“EMEA”) 30,805 26,489 58,032 50,552 Asia and Pacific Rim (“APAC”) 9,326 8,172 18,110 16,000 Total revenue $ 129,005 $ 113,651 $ 243,535 $ 219,743 For the three months ended June 30, 2024 and 2023, revenue in the U.S. was $84,498 and $75,351, respectively. For the six months ended June 30, 2024 and 2023, revenue in the U.S. was $158,782 and $145,966, respectively. The following table summarizes long lived assets, net by geographic area: June 30, 2024 December 31, 2023 Americas $ 13,035 $ 13,848 EMEA 7,382 8,577 APAC 4,882 3,012 Total long-lived assets $ 25,299 $ 25,437

Stock-based compensation

Stock-based compensation	6 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Stock-based compensation	Stock-based compensation Total stock-based compensation expense for all equity arrang ements for the three and six months e nded June 30, 2024 and 2023 were as follows: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Cost of revenue $ 82 $ 126 $ 206 $ 210 Sales and marketing 3,435 8,258 9,173 12,145 Technology and development 4,799 7,362 9,198 10,532 General and administrative 6,688 24,689 12,165 28,854 Total $ 15,004 $ 40,435 $ 30,742 $ 51,741 The Company maintains multiple stock-based incentive compensation plans. Expense relating to outstanding awards under such plans is summarized as follows: Three Months Ended June 30, Six Months Ended June 30, Unamortized Expense as of Weighted 2024 2023 2024 2023 June 30, 2024 Time-Based Options 2018 Plan $ 191 $ 725 $ 636 $ 1,817 2021 Plan 533 533 1,069 1,204 Total Time-Based Options expense $ 724 $ 1,258 $ 1,705 $ 3,021 $ 2,288 1.0 year Return-Target Options 2018 Plan $ — $ 20,326 $ — $ 20,326 2021 Plan — 3,124 — 3,124 Total Return-Target Options expense $ — $ 23,450 $ — $ 23,450 $ — 0.0 years LTIP expense (2018 Plan) $ — $ 317 $ — $ 317 Other equity awards under 2021 Plan Restricted Stock Units ("RSUs") $ 10,520 $ 9,461 $ 20,085 $ 16,723 $ 107,381 2.9 years Market Stock Units ("MSUs") 3,405 5,676 8,024 7,562 27,247 3.4 years Other equity awards under 2021 Plan expense $ 13,925 $ 15,137 $ 28,109 $ 24,285 $ 134,628 Employee Stock Purchase Plan "ESPP" $ 355 $ 273 $ 928 $ 668 Total Stock-Based Compensation expense $ 15,004 $ 40,435 $ 30,742 $ 51,741 $ 136,916 Integral Ad Science Holding Corp. Amended and Restated 2018 Non-Qualified Stock Option Plan On August 1, 2018, the Company adopted the 2018 Non-Qualified Stock Option Plan (“2018 Plan”). Under the 2018 Plan, the Company issued (i) Time-Based Options that vest over four years with 25% vesting after twelve months and an additional 6.25% vesting at the end of each successive quarter thereafter; and (ii) Return-Target Options that were to vest upon the first to occur of sale of the Company, or, sale or transfer to any third party of shares, as a result of which, any person or group other than Vista, obtains possession of voting power to elect a majority of the Board or any other governing body and the achievement of a total equity return multiple of 3.0 or greater. The 2018 Plan contained a provision wherein, the Time-Based Options could be repurchased by the Company at cost upon resignation of the employee. Due to this repurchase feature, the Time-Based Options did not provide the employee with the potential benefits associated with a stock award holder, and therefore, these awards were not accounted for as a stock-based award under ASC 718, Compensation - Stock Compensation but instead, compensation cost was recognized when the benefit to the employee was determined to be probable. The Return-Target Options were considered to contain both market (total stockholder return threshold) and performance (exit event) conditions. As such, the award was measured on the date of grant. Since the conditions for vesting related to the Return-Target Options were not met prior to the IPO, no stock-based compensation was recognized in the pre-IPO financial statements of the Company. During the three months ended June 30, 2023, with the filing of a “shelf” registration statement on Form S-3, the market condition and the implied performance condition relating to the Return-Target Options were deemed to be probable, and $23,450 was recognized in that period. In connection with the IPO, the 2018 Plan was amended and restated (the “Amended and Restated 2018 Plan”) with the following modifications: (i) the provision to repurchase the Time-Based Options at cost upon resignation of the employee was removed and (ii) the Return-Target Options were modified to include vesting upon a sale of shares by Vista following the IPO resulting in Vista realizing a cash return on its investment in the Company equaling or exceeding $1.17 billion. As a result of the modification to the Time-Based Options, the awards became subject to the guidance in ASC 718, Compensation - Stock Compensation . As the return multiple and vesting conditions associated with the Return-Target Options were also modified, the Company fair valued the Return-Target Options using a Monte Carlo simulation model. The Return-Target Options become exercisable following both (i) a registration of shares of common stock held by Vista and (ii) Vista realizing a cash return on its investment in the Company equaling or exceeding $1.17 billion. Vesting of the Time-Based Options accelerates when the Return-Target Options vest and therefore, recognition of the remaining unamortized stock compensation expense related to the Time-Based Options will accelerate when the Return-Target Options vest. The total number of Time-Based Options and Return-Target Options outstanding under the Amended and Restated 2018 Plan as of June 30, 2024 were 2,251,431 and 1,342,092, respectively. The Company does not expect to issue any additional awards under the Amended and Restated 2018 Plan. 2021 Omnibus Incentive Plan (“2021 Plan”) On June 29, 2021, the Company adopted the 2021 Plan to incentivize execu tive officers, management, employees, consultants and directors of the Company and to align the interests of the participants with those of the Company’s share holders. As of June 30, 2024, there were 43,059,189 shares reserved for issuance under the 2021 Plan. The total number of shares reserved for issuance under the 2021 Plan is increased on January 1 of each of the first 10 calendar years during the term of the 2021 Plan, by the lesser of (i) 5% of the total number of shares of common stock outstanding on each December 31 st immediately prior to the date of increase or (ii) such number of shares of common stock determined by our Board or compensation committee. As of June 30, 2024, there were 1,147,846 total options outstanding under the 2021 Plan, consisting of 764,908 Time-Based Options and 382,938 Return-Target Options. The vesting conditions for the options issued under the 2021 Plan are identical to those described under the Amended and Restated 2018 Plan. Stock option activity for the six months ended June 30, 2024 is as follows: Time-Based Options Stock options Weighted Weighted average Aggregate Outstanding at December 31, 2023 3,060,388 $ 7.70 5.70 $ 23,251 Canceled or forfeited — — — — Exercised (44,049) 7.10 — — Outstanding at June 30, 2024 3,016,339 $ 7.70 5.19 $ 12,415 Vested and expected to vest at June 30, 2024 3,016,339 $ 7.70 5.19 $ 12,415 Exercisable as of June 30, 2024 2,806,960 $ 7.00 5.06 $ 12,395 Return-Target Options Stock options Weighted Weighted average Aggregate Outstanding at December 31, 2023 1,725,030 $ 7.47 5.78 $ 13,318 Canceled or forfeited — — — — Exercised — — — — Outstanding at June 30, 2024 1,725,030 $ 7.47 5.28 $ 7,051 Vested and expected to vest at June 30, 2024 1,725,030 $ 7.47 5.28 $ 7,051 Exercisable as of June 30, 2024 — $ — — $ — Restricted Stock Units ("RSUs") RSUs under the 2021 Plan granted prior to May 2022 vest 25% each year and become fully vested after four years of service. RSUs under the 2021 Plan granted during or after May 2022 vest 6.25% at the end of each successive quarter and become fully vested after four years of service. RSU activity for the six months ended June 30, 2024 is as follows: RSUs Number of Shares Weighted Average Grant Date Fair Value Outstanding at December 31, 2023 9,014,435 $ 12.41 Granted 3,752,803 10.32 Canceled or forfeited (1,208,161) 11.13 Vested (1,499,394) 12.07 Outstanding as of June 30, 2024 10,059,683 $ 11.83 Expected to vest as of June 30, 2024 10,059,683 Market Stock Units ("MSUs") The Company granted MSUs under the 2021 Plan to certain executive officers. MSUs vest over four years, 25% on the first anniversary of the vesting commencement date and 6.25% at the end of each quarter thereafter. The number of MSUs eligible to vest is based on the performance of the Company's common stock over each applicable vesting period. The number of shares eligible to vest is calculated based on a payout factor. The payout factor is calculated by dividing (i) the average closing price of the Company's stock during the ten trading days immediately preceding the applicable vesting date by (ii) the closing price of the Company's stock on the vesting commencement date. The payout factor is zero if such quotient is less than 0.60 and is capped at 2.25. Such quotient is then multiplied by the target number of MSUs granted to the relevant officer to determine the number of shares to be issued to the officer at vesting. The grant date fair value of the MSUs was determined using a Monte-Carlo simulation. The Company uses the accelerated attribution method to account for these awards. MSU activity for the six months ended June 30, 2024 is as follows: MSUs Number of Shares Weighted Average Outstanding as of January 1, 2023 1,800,486 $ 19.28 Granted 1,395,332 14.86 Canceled or forfeited (209,532) 21.05 Change in awards based on performance (97,044) 21.60 Vested (332,438) 19.82 Outstanding as of June 30, 2024 2,556,804 $ 16.68 Expected to vest as of June 30, 2024 2,556,804 2021 Employee Stock Purchase Plan The Company adopted the ESPP for the primary purpose of incentivizing employees in future periods. As of June 30, 2024, 6,161,033 shares of common stock are reserved for issuance under the ESPP. The number of shares available for issuance under the ESPP is increased on January 1 st of each calendar year, ending in and including 2031, by an amount equal to the lesser of (i) 1% of the shares outstanding on the final day of the immediately preceding calendar year and (ii) such smaller number of shares as is determined by our Board, subject to a maximum of 16,000,000 shares of our common stock for the portion of the ESPP intended to qualify as an employee stock purchase plan under Section 423 of the Internal Revenue Code. All Company employees and employees of designated subsidiaries are eligible to participate in the ESPP and may purchase shares through payroll deductions of up to 15% of their eligible compensation, subject to a maximum of $25 in any annual period for the portion of the ESPP intended to qualify as an employee purchase plan under Section 423 of the Internal Revenue Code. The ESPP provides eligible employees the opportunity to purchase shares of the Company's common stock through payroll deductions at a price equal to 85% of the fair market value of the shares on (i) the first business day of the offering period or (ii) the last business day of the offering period, whichever is lower. The ESPP is offered to employees in six-month windows, with phases beginning on February 1 and August 1 of each calendar year. For the window that ended on January 31, 2023, employees purchased 111,163 shares at a price of $7.93 per share. For the window that ended on January 31, 2024, employees purchased 153,239 shares at a price of $12.37 per share. As of June 30, 2024, 5,734,225 shares were available for future purchase under the ESPP.

Stockholders' equity

Stockholders' equity	6 Months Ended
	Jun. 30, 2024
Stockholders' Equity Note [Abstract]
Stockholders' equity	Stockholders’ equity As of June 30, 2024, our authorized common stock consists of 500,000,000 shares of common stock, par value $0.001 per share and 50,000,000 preferred stock, par value $0.001 per share. For the three months ended June 30, 2024, the Company issued 1,025,286 shares of common stock for vested RSUs and MSUs. For the six months ended June 30, 2024, the Company issued 1,831,832 shares of common stock for vested RSUs and MSUs, employees exercised stock options in exchange for 44,049 shares of common stock for $313 and employees purchased 153,239 shares of common stock through the ESPP.

Commitments and contingencies

Commitments and contingencies	6 Months Ended
	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	Commitments and contingencies Indemnifications In its normal course of business, the Company has made certain indemnities, commitments, and guarantees under which it may be required to make payments in relation to certain transactions. Those indemnities include intellectual property indemnities to the Company’s customers, indemnities to directors and officers of the Company to the maximum extent permitted under the laws of the State of Delaware, and indemnifications related to the Company’s lease agreements. In addition, the Company’s advertiser and distribution partner agreements contain certain indemnification provisions which are generally consistent with those prevalent in the Company’s industry. The Company has not incurred any obligations under indemnification provisions historically and does not expect to incur significant obligations in the future. Accordingly, the Company has not recorded any liability for these indemnities, commitments, and guarantees in the accompanying balance sheets. Purchase commitments In the ordinary course of business, the Company enters into various purchase commitments primarily related to third-party cloud hosting and data services, and information technology operations. Total non-cancelable purchase commitments as of June 30, 2024 were approximately $135,550 for periods through 2028.

Net income per share

Net income per share	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Net income per share	Net income per share Basic and diluted income per share is computed by dividing net income by the weighted-average shares outstanding: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Numerator: Net income $ 7,690 $ 7,677 $ 6,435 $ 10,823 Denominator: Basic Shares: Weighted-average shares outstanding 160,502,795 155,425,264 159,954,926 155,267,531 Diluted Shares: Basic weighted-average shares outstanding 160,502,795 155,425,264 159,954,926 155,267,531 Dilutive effect of stock-based awards 3,245,801 7,209,046 4,243,307 5,582,903 Weighted-average diluted shares outstanding 163,748,596 162,634,310 164,198,233 160,850,434 Net income per share Basic $ 0.05 $ 0.05 $ 0.04 $ 0.07 Diluted $ 0.05 $ 0.05 $ 0.04 $ 0.07 The following potential outstanding equity awards were excluded from the computation of diluted net income per share attributable to common stockholders for the periods presented given that their inclusion would have been anti-dilutive. Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Options to purchase common stock 1,175,071 1,472,891 1,187,222 1,987,605 Restricted stock units 8,586,149 352,178 3,485,769 556,557 Market stock units 1,946,608 — 1,256,818 873,331 Total 11,707,828 1,825,069 5,929,809 3,417,493

Fair value disclosures

Fair value disclosures	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Fair value disclosures	Fair value disclosures Assets and liabilities measured at fair value on a recurring basis The Company invests in money market funds, which are measured and recorded at fair value on a recurring basis at each reporting period. Money market funds are valued based on quoted market prices in active markets and classified within Level 1 of the fair value hierarchy. The following table summarizes our cash equivalents measured at fair value on a recurring basis: Fair value hierarchy Fair value Money market funds June 30, 2024 Level 1 $ 15,730 December 31, 2023 Level 1 $ 15,331 The carrying value of cash and cash equivalents, restricted cash, accounts receivable and accounts payable approximated fair value due to their short maturities. Financial instruments

Related-party transactions

Related-party transactions	6 Months Ended
	Jun. 30, 2024
Related Party Transactions [Abstract]
Related-party transactions	Related-party transactions The Company incurs various travel and other expenses related to services provided by Vista Equity Partners Management, LLC (“VEP”). For the three months ended June 30, 2024 and 2023, the Company incurred expenses of $2 and $18, respectively. For the six months ended June 30, 2024 and 2023, the Company incurred expenses of $18 and $43, respectively. These costs were included in general and administrative expenses in the Condensed Consolidated Statements of Operations and Comprehensive Income. Amounts due to VEP as of June 30, 2024 and December 31, 2023 were $0 and $30, respectively. In May 2023, funds affiliated with Vista conducted an underwritten secondary offering of 11,500,000 shares of the Company’s common stock. In June 2023, funds affiliated with Vista sold 5,220,000 shares of the Company’s common stock in a block trade in compliance with Rule 144 of the Securities Act of 1933, as amended (the “Securities Act”). The Company did not receive any proceeds from these sales, but bore the costs associated with therewith (other than underwriting discounts and commissions), which were $1,404 and were recorded within General and administrative expenses in the Condensed Consolidated Statement of Operations and Comprehensive Income. The Company had other related party transactions with companies owned by Vista Equity Partners that are immaterial individually and in aggregate to the Condensed Consolidated Balance Sheets and Condensed Consolidated Statements of Operations and Comprehensive Income.

Restructuring

Restructuring	6 Months Ended
	Jun. 30, 2024
Restructuring and Related Activities [Abstract]
Restructuring	Restructuring On December 7, 2022, the Company announced a reduction in workforce of approximately 120 employees to better align resources, consistent with the Company’s strategy of increasing operational efficiency and improving productivity. There was no activity during the quarter ended June 30, 2024 as there was no remaining liability as of December 31, 2023. Activity for the six months ended June 30, 2023, was as follows: Balance at December 31, 2022 $ 4,315 Payments and impact of FX (4,000) Balance at June 30, 2023 $ 315

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net income	$ 7,690	$ 7,677	$ 6,435	$ 10,823

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of presentation and sum_2

Basis of presentation and summary of significant accounting policies (Policies)	6 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation The Company’s condensed consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and reflect the financial position, results of operations and cash flows for all periods presented. The year-end condensed balance sheet data was derived from audited financial statements but does not include all disclosures required by U.S. GAAP. The accompanying interim Condensed Consolidated Balance Sheets as of June 30, 2024, the Condensed Consolidated Statements of Operations and Comprehensive Income, of Cash Flows and of Changes in Stockholders’ Equity for the three and six months ended June 30, 2024 and 2023, and the related footnote disclosures are unaudited. These unaudited interim condensed consolidated financial statements have been prepared on the same basis as the annual consolidated financial statements and, in management’s opinion, include all adjustments necessary to state fairly the consolidated financial position of the Company. All adjustments made were of a normal recurring nature. The results for the three and six months ended June 30, 2024 are not necessarily indicative of the results to be expected for the year ending December 31, 2024, or for any future period.
Basis of consolidation	Basis of consolidation The condensed consolidated financial statements include the accounts of Integral Ad Science Holding Corp. and its wholly-owned subsidiaries. All material intercompany accounts and transactions have been eliminated in consolidation.
Use of estimates	Use of estimatesThe preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates. Significant estimates include the estimated useful lives of intangible assets and internal use software, the allowance for credit losses, goodwill impairment testing, assumptions used to calculate equity-based compensation, and the realization of deferred tax assets. The Company bases its estimates on past experience, market conditions, and other assumptions that the Company believes are reasonable under the circumstances, and the Company evaluates these estimates on an ongoing basis. Actual results may differ from these estimates due to risks and uncertainties, including the continued uncertainty surrounding rapidly changing market and economic conditions due to heightened inflation, changes to fiscal and monetary policy, higher interest rates, currency fluctuations, instability in the financial markets and disruptions in European economies as a result of the war in Ukraine and other geopolitical issues.
Foreign currency	Foreign currencyThe reporting currency of the Company is the U.S. dollar. The functional currency of our foreign subsidiaries is the currency of the primary economic environment in which they operate, which is their local currency. The financial statements of these subsidiaries are translated into U.S. dollars using month-end rates of exchange for assets and liabilities, and average rates of exchange for revenue, costs and expenses. Translation gains and losses are recorded in accumulated other comprehensive income within stockholders’ equity. Transaction gains and losses including those on intercompany transactions denominated in a currency other than the functional currency of the entity involved are included in foreign exchange loss (gain), net in the Condensed Consolidated Statements of Operations and Comprehensive Income.
Cash, cash equivalents, and restricted cash	Cash, cash equivalents, and restricted cash Cash equivalents include money market accounts and other highly liquid investments with an original maturity date of three months or less at the time of purchase. Cash amounts with restrictions are classified as restricted cash within the Condensed Consolidated Balance Sheets.
Accounts receivable, net	Accounts receivable, net Accounts receivable are carried at the original invoiced amount less an allowance for credit losses. The allowance is estimated by pooling accounts receivables based on similar risk characteristics, and expected credit loss exposure is evaluated for each accounts receivable pool. Invoices are typically issued with net 30-days to net 90-days terms. Account balances are considered delinquent if payment is not received by the due date, and the receivables are written off when deemed uncollectible. These costs are recorded in general and administrative expenses within the Condensed Consolidated Statements of Operations and Comprehensive Income.
Stock-based compensation	Stock-based compensation Stock-based compensation is measured at the grant date based on the fair value of the award and is recognized as expense over the requisite service period, which is generally the vesting period. The Company accounts for forfeitures as they occur. The Company used the following assumptions in valuing its market stock units ("MSUs"), shares granted under the Company's 2021 Employee Stock Purchase Program ("ESPP"), time-based service options, which vest over a period of time subject to continued employment ("Time-Based Options"), and return-target options ("Return-Target Options"), which vest upon a realized cash return of the equity investment of funds affiliated with Vista Equity Partners ("Vista"), the Company’s largest shareholder. Expected term — For time-based awards, the estimated expected term of options granted is generally calculated as the vesting period plus the midpoint of the remaining contractual term, as the Company does not have sufficient historical information to develop reasonable expectations surrounding future exercise patterns and post-vesting employment termination behavior. For awards subject to market and performance conditions, the expected term represents the period of time that the options granted are expected to be outstanding. Expected volatility — Volatility is estimated based upon observed option-implied volatilities for the Company in addition to a group of peer companies. The Company believes this is the best estimate of the expected volatility over the weighted-average expected term of its option grants. Risk-free interest rate — The risk-free interest rate is based on the implied yield currently available on U.S. Treasury instruments with terms approximately equal to the expected term of the option. Expected dividend — The expected dividend assumption was based on the Company’s history and expectation of dividend payouts. The Company currently has no history or expectation of paying cash dividends on its common stock. Fair value — Following the pricing of the Initial Public Offering, the Company’s shares have traded publicly, and accordingly the Company uses the applicable closing price of its common stock to determine fair value.
Accounting pronouncements not yet adopted	(h) Accounting pronouncements not yet adopted On November 27, 2023, the FASB issued ASU 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures," which requires incremental disclosures related to an entity's reportable segments. This ASU is effective for annual periods beginning after December 15, 2023. The Company does not expect the adoption of ASU 2023-07 to have a material impact on its consolidated financial statements. On December 14, 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures," which requires companies to disclose more detailed information in their reconciliation of their statutory tax rate to their effective tax rate. The ASU also requires entities to disclosure more detailed information about income taxes paid, including by jurisdiction, pretax income (or loss) from continuing operations and income tax expense (or benefit). This ASU is effective for annual periods, including interim periods within those annual periods, beginning after December 15, 2024. The Company is currently evaluating the impact of the adoption of ASU No. 2023-09 on its consolidated financial statements.

Basis of presentation and sum_3

Basis of presentation and summary of significant accounting policies (Tables)	6 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Schedule of Cash and Cash Equivalents	The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets to the amounts shown in the Condensed Consolidated Statements of Cash Flows. June 30, 2024 December 31, 2023 Cash and cash equivalents $ 70,603 $ 124,759 Short-term restricted cash 275 54 Long-term restricted cash (held in other long-term assets) 2,497 2,477 Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows $ 73,375 $ 127,290
Schedule of Restricted Cash	The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets to the amounts shown in the Condensed Consolidated Statements of Cash Flows. June 30, 2024 December 31, 2023 Cash and cash equivalents $ 70,603 $ 124,759 Short-term restricted cash 275 54 Long-term restricted cash (held in other long-term assets) 2,497 2,477 Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows $ 73,375 $ 127,290
Schedule of Allowance for Credit Losses	The activity in our allowance for credit losses consists of the following as of: June 30, 2024 June 30, 2023 Balance, beginning of period $ 8,645 $ 6,691 Additional provision 745 1,254 Receivables written off and impact of exchange rates (114) 92 Adoption of ASC 326 — (1,271) Balance, end of period $ 9,276 $ 6,766
Schedule of Valuation Assumptions of Stock Options	The Company used the following assumptions in valuing its stock-based compensation: June 30, 2024 June 30, 2023 Estimated fair value $4.47 - $14.86 $3.35 - $21.05 Expected volatility (%) 50% - 66% 60% - 65% Expected term (in years) 0.50 - 4.00 0.50 - 4.00 Risk-free interest rate (%) 4.26% - 5.15% 3.63% - 4.79% Dividend yield — —

Property and equipment, net (Ta

Property and equipment, net (Tables)	6 Months Ended
	Jun. 30, 2024
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment consisted of the following: Estimated June 30, 2024 December 31, 2023 Computer and office equipment 1 - 3 years $ 4,737 $ 4,070 Computer software 3 - 5 years 218 218 Leasehold improvements Various 2,814 2,535 Furniture 5 years 581 585 Total property and equipment 8,350 7,408 Less: accumulated depreciation (4,274) (3,639) Total property and equipment, net $ 4,076 $ 3,769

Internal use software, net (Tab

Internal use software, net (Tables)	6 Months Ended
	Jun. 30, 2024
Internal Use Software [Abstract]
Schedule of Internal Use Software, Net	Internal use software consisted of the following: Estimated June 30, 2024 December 31, 2023 Internal use software 3 - 5 years $ 88,185 $ 69,797 Less: asset impairments — (33) Less: accumulated amortization (40,607) (29,463) Total internal use software, net $ 47,578 $ 40,301

Intangible assets, net (Tables)

Intangible assets, net (Tables)	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Gross Book Value, Accumulated Amortization, Net Book Value and Amortization Periods of Intangible Assets	The gross book value, accumulated amortization, net book value and amortization periods of the intangible assets were as follows: June 30, 2024 Estimated Gross book Accumulated Net book value Weighted Customer relationships 5 - 15 years $ 301,964 $ (156,652) $ 145,312 8.1 years Developed technology 5 years 137,166 (128,494) 8,672 2.2 years Trademarks 5 - 9 years 19,700 (13,860) 5,840 2.9 years Favorable leases 6 years 198 (197) 1 0.1 years Total $ 459,028 $ (299,203) $ 159,825 December 31, 2023 Estimated Gross book Accumulated Net book value Weighted Customer relationships 5 - 15 years $ 301,994 $ (142,135) $ 159,859 8.6 years Developed technology 5 years 137,361 (125,426) 11,935 2.6 years Trademarks 5 - 9 years 19,700 (12,604) 7,096 3.4 years Favorable leases 6 years 198 (180) 18 0.5 years Total $ 459,253 $ (280,345) $ 178,908

Goodwill (Tables)

Goodwill (Tables)	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Goodwill	The following table provides a roll forward of the changes in the goodwill balance: Goodwill as of December 31, 2023 $ 675,282 Impact of exchange rates (932) Goodwill as of June 30, 2024 $ 674,350

Accounts payable and accrued _2

Accounts payable and accrued expenses and other long-term liabilities (Tables)	6 Months Ended
	Jun. 30, 2024
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Accrued Expenses	Accounts payable and accrued expenses consisted of the following: June 30, 2024 December 31, 2023 Accounts payable $ 9,856 $ 12,092 Accrued payroll 5,309 9,250 Accrued professional fees 3,209 3,281 Accrued bonuses and commissions 12,444 20,413 Accrued revenue sharing 4,588 4,136 Taxes payable 2,440 6,436 Accrued hosting fees 4,759 9,475 Other accrued expenses 8,491 7,149 Total accounts payable and accrued expenses $ 51,096 $ 72,232
Schedule of Other Long-Term Liabilities	Other long-term liabilities consisted of the following: June 30, 2024 December 31, 2023 Security deposit received $ 672 $ 672 Uncertain tax positions 5,499 5,511 Total other long-term liabilities $ 6,171 $ 6,183

Long-term debt (Tables)

Long-term debt (Tables)	6 Months Ended
	Jun. 30, 2024
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	As of June 30, 2024, the Company was in compliance with all covenants contained in the Credit Agreement. June 30, 2024 December 31, 2023 Revolver $ 95,000 $ 155,000 Less: unamortized debt issuance costs (1,043) (1,275) Total carrying amount $ 93,957 $ 153,725
Schedule of Future Principal Payments of Long-term Debt	Future principal payments of long-term debt as of June 30, 2024 are as follows: Year Ending 2024 $ — 2025 — 2026 95,000 $ 95,000

Segment data (Tables)

Segment data (Tables)	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas	The following table summarizes revenue by geographic area: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 North and South America (“Americas”) $ 88,874 $ 78,990 $ 167,393 $ 153,191 Europe, Middle East and Africa (“EMEA”) 30,805 26,489 58,032 50,552 Asia and Pacific Rim (“APAC”) 9,326 8,172 18,110 16,000 Total revenue $ 129,005 $ 113,651 $ 243,535 $ 219,743 The following table summarizes long lived assets, net by geographic area: June 30, 2024 December 31, 2023 Americas $ 13,035 $ 13,848 EMEA 7,382 8,577 APAC 4,882 3,012 Total long-lived assets $ 25,299 $ 25,437

Stock-based compensation (Table

Stock-based compensation (Tables)	6 Months Ended
	Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Stock-Based Compensation Expense	Total stock-based compensation expense for all equity arrang ements for the three and six months e nded June 30, 2024 and 2023 were as follows: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Cost of revenue $ 82 $ 126 $ 206 $ 210 Sales and marketing 3,435 8,258 9,173 12,145 Technology and development 4,799 7,362 9,198 10,532 General and administrative 6,688 24,689 12,165 28,854 Total $ 15,004 $ 40,435 $ 30,742 $ 51,741 The Company maintains multiple stock-based incentive compensation plans. Expense relating to outstanding awards under such plans is summarized as follows: Three Months Ended June 30, Six Months Ended June 30, Unamortized Expense as of Weighted 2024 2023 2024 2023 June 30, 2024 Time-Based Options 2018 Plan $ 191 $ 725 $ 636 $ 1,817 2021 Plan 533 533 1,069 1,204 Total Time-Based Options expense $ 724 $ 1,258 $ 1,705 $ 3,021 $ 2,288 1.0 year Return-Target Options 2018 Plan $ — $ 20,326 $ — $ 20,326 2021 Plan — 3,124 — 3,124 Total Return-Target Options expense $ — $ 23,450 $ — $ 23,450 $ — 0.0 years LTIP expense (2018 Plan) $ — $ 317 $ — $ 317 Other equity awards under 2021 Plan Restricted Stock Units ("RSUs") $ 10,520 $ 9,461 $ 20,085 $ 16,723 $ 107,381 2.9 years Market Stock Units ("MSUs") 3,405 5,676 8,024 7,562 27,247 3.4 years Other equity awards under 2021 Plan expense $ 13,925 $ 15,137 $ 28,109 $ 24,285 $ 134,628 Employee Stock Purchase Plan "ESPP" $ 355 $ 273 $ 928 $ 668 Total Stock-Based Compensation expense $ 15,004 $ 40,435 $ 30,742 $ 51,741 $ 136,916
Schedule of Stock Option Activity	Stock option activity for the six months ended June 30, 2024 is as follows: Time-Based Options Stock options Weighted Weighted average Aggregate Outstanding at December 31, 2023 3,060,388 $ 7.70 5.70 $ 23,251 Canceled or forfeited — — — — Exercised (44,049) 7.10 — — Outstanding at June 30, 2024 3,016,339 $ 7.70 5.19 $ 12,415 Vested and expected to vest at June 30, 2024 3,016,339 $ 7.70 5.19 $ 12,415 Exercisable as of June 30, 2024 2,806,960 $ 7.00 5.06 $ 12,395 Return-Target Options Stock options Weighted Weighted average Aggregate Outstanding at December 31, 2023 1,725,030 $ 7.47 5.78 $ 13,318 Canceled or forfeited — — — — Exercised — — — — Outstanding at June 30, 2024 1,725,030 $ 7.47 5.28 $ 7,051 Vested and expected to vest at June 30, 2024 1,725,030 $ 7.47 5.28 $ 7,051 Exercisable as of June 30, 2024 — $ — — $ —
Schedule of Restricted Stock Unit Activity	RSU activity for the six months ended June 30, 2024 is as follows: RSUs Number of Shares Weighted Average Grant Date Fair Value Outstanding at December 31, 2023 9,014,435 $ 12.41 Granted 3,752,803 10.32 Canceled or forfeited (1,208,161) 11.13 Vested (1,499,394) 12.07 Outstanding as of June 30, 2024 10,059,683 $ 11.83 Expected to vest as of June 30, 2024 10,059,683
Schedule of Market Stock Unit Activity	MSU activity for the six months ended June 30, 2024 is as follows: MSUs Number of Shares Weighted Average Outstanding as of January 1, 2023 1,800,486 $ 19.28 Granted 1,395,332 14.86 Canceled or forfeited (209,532) 21.05 Change in awards based on performance (97,044) 21.60 Vested (332,438) 19.82 Outstanding as of June 30, 2024 2,556,804 $ 16.68 Expected to vest as of June 30, 2024 2,556,804

Net income per share (Tables)

Net income per share (Tables)	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Basic and diluted income per share is computed by dividing net income by the weighted-average shares outstanding: Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Numerator: Net income $ 7,690 $ 7,677 $ 6,435 $ 10,823 Denominator: Basic Shares: Weighted-average shares outstanding 160,502,795 155,425,264 159,954,926 155,267,531 Diluted Shares: Basic weighted-average shares outstanding 160,502,795 155,425,264 159,954,926 155,267,531 Dilutive effect of stock-based awards 3,245,801 7,209,046 4,243,307 5,582,903 Weighted-average diluted shares outstanding 163,748,596 162,634,310 164,198,233 160,850,434 Net income per share Basic $ 0.05 $ 0.05 $ 0.04 $ 0.07 Diluted $ 0.05 $ 0.05 $ 0.04 $ 0.07
Schedule of Antidilutive Securities Excluded From Computation of Earnings Per Share	The following potential outstanding equity awards were excluded from the computation of diluted net income per share attributable to common stockholders for the periods presented given that their inclusion would have been anti-dilutive. Three Months Ended June 30, Six Months Ended June 30, 2024 2023 2024 2023 Options to purchase common stock 1,175,071 1,472,891 1,187,222 1,987,605 Restricted stock units 8,586,149 352,178 3,485,769 556,557 Market stock units 1,946,608 — 1,256,818 873,331 Total 11,707,828 1,825,069 5,929,809 3,417,493

Fair value disclosures (Tables)

Fair value disclosures (Tables)	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Schedule of Cash Equivalents Measured at Fair Value on a Recurring Basis	The following table summarizes our cash equivalents measured at fair value on a recurring basis: Fair value hierarchy Fair value Money market funds June 30, 2024 Level 1 $ 15,730 December 31, 2023 Level 1 $ 15,331

Restructuring (Tables)

Restructuring (Tables)	6 Months Ended
	Jun. 30, 2024
Restructuring and Related Activities [Abstract]
Schedule of Restructuring Reserve Activity	Activity for the six months ended June 30, 2023, was as follows: Balance at December 31, 2022 $ 4,315 Payments and impact of FX (4,000) Balance at June 30, 2023 $ 315

Basis of presentation and sum_4

Basis of presentation and summary of significant accounting policies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2023
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease liabilities arising from right of use assets			$ 5,278	$ 3,902	$ 4,900
Unrealized foreign exchange gain (loss)	$ (169)	$ 561	(1,564)	1,239
Realized transaction gains (losses)	(146)	70	(320)	(92)
Interest income	$ 726	$ 752	$ 1,680	1,280
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease liabilities arising from right of use assets				$ 30,400	$ 29,300

Basis of presentation and sum_5

Basis of presentation and summary of significant accounting policies -Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Accounting Policies [Abstract]
Cash and cash equivalents	$ 70,603	$ 124,759
Short-term restricted cash	275	54
Long-term restricted cash (held in other long-term assets)	2,497	2,477
Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows	$ 73,375	$ 127,290	$ 101,259	$ 89,671

Basis of presentation and sum_6

Basis of presentation and summary of significant accounting policies -Schedule of Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 8,645	$ 6,691
Additional provision	745	1,254
Receivables written off and impact of exchange rates	(114)	92
Balance, end of period	9,276	6,766
Cumulative Effect, Period of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 0	$ (1,271)

Basis of presentation and sum_7

Basis of presentation and summary of significant accounting policies - Schedule of Valuation Assumptions of Stock Options (Details) - $ / shares	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility (%), minimum	50%	60%
Expected volatility (%), maximum	66%	65%
Risk-free interest rate (%), minimum	4.26%	3.63%
Risk-free interest rate (%), maximum	5.15%	4.79%
Dividend yield	0%	0%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated fair value (in dollars per share)	$ 4.47	$ 3.35
Expected term (in years)	6 months	6 months
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated fair value (in dollars per share)	$ 14.86	$ 21.05
Expected term (in years)	4 years	4 years

Property and equipment, net - S

Property and equipment, net - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 8,350	$ 7,408
Less: accumulated depreciation	(4,274)	(3,639)
Total property and equipment, net	4,076	3,769
Computer and office equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	4,737	4,070
Computer software
Property, Plant and Equipment [Line Items]
Total property and equipment	218	218
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 2,814	2,535
Furniture
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	5 years
Total property and equipment	$ 581	$ 585
Minimum | Computer and office equipment
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	1 year
Minimum | Computer software
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	3 years
Maximum | Computer and office equipment
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	3 years
Maximum | Computer software
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	5 years

Property and equipment, net - N

Property and equipment, net - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 334	$ 287	$ 643	$ 485

Internal use software, net - Sc

Internal use software, net - Schedule of Internal Use Software, Net (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Internal Use Software [Line Items]
Internal use software	$ 88,185	$ 69,797
Less: asset impairments	0	(33)
Less: accumulated amortization	(40,607)	(29,463)
Total internal use software, net	$ 47,578	$ 40,301
Minimum
Internal Use Software [Line Items]
Estimated useful life (in years)	3 years
Maximum
Internal Use Software [Line Items]
Estimated useful life (in years)	5 years

Internal use software, net - Na

Internal use software, net - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Internal Use Software [Abstract]
Amortization expense	$ 5,896	$ 3,521	$ 11,182	$ 6,445

Intangible assets, net - Schedu

Intangible assets, net - Schedule of Gross Book Value, Accumulated Amortization, Net Book Value and Amortization Periods of Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross book value	$ 459,028	$ 459,253
Accumulated amortization	(299,203)	(280,345)
Net book value	159,825	178,908
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross book value	301,964	301,994
Accumulated amortization	(156,652)	(142,135)
Net book value	$ 145,312	$ 159,859
Weighted average remaining useful life	8 years 1 month 6 days	8 years 7 months 6 days
Developed technology
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	5 years	5 years
Gross book value	$ 137,166	$ 137,361
Accumulated amortization	(128,494)	(125,426)
Net book value	$ 8,672	$ 11,935
Weighted average remaining useful life	2 years 2 months 12 days	2 years 7 months 6 days
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross book value	$ 19,700	$ 19,700
Accumulated amortization	(13,860)	(12,604)
Net book value	$ 5,840	$ 7,096
Weighted average remaining useful life	2 years 10 months 24 days	3 years 4 months 24 days
Favorable leases
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	6 years	6 years
Gross book value	$ 198	$ 198
Accumulated amortization	(197)	(180)
Net book value	$ 1	$ 18
Weighted average remaining useful life	1 month 6 days	6 months
Minimum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	5 years	5 years
Minimum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	5 years	5 years
Maximum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	15 years	15 years
Maximum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	9 years	9 years

Intangible assets, net - Narrat

Intangible assets, net - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 9,479	$ 9,713	$ 18,964	$ 19,416

Goodwill (Details)

Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill [Roll Forward]
Goodwill at beginning of period	$ 675,282
Impact of exchange rates	(932)
Goodwill at end of period	$ 674,350

Accounts payable and accrued _3

Accounts payable and accrued expenses and other long-term liabilities - Schedule of Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Accounts payable	$ 9,856	$ 12,092
Accrued payroll	5,309	9,250
Accrued professional fees	3,209	3,281
Accrued bonuses and commissions	12,444	20,413
Accrued revenue sharing	4,588	4,136
Taxes payable	2,440	6,436
Accrued hosting fees	4,759	9,475
Other accrued expenses	8,491	7,149
Total accounts payable and accrued expenses	$ 51,096	$ 72,232

Accounts payable and accrued _4

Accounts payable and accrued expenses and other long-term liabilities - Schedule of Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Security deposit received	$ 672	$ 672
Uncertain tax positions	5,499	5,511
Total other long-term liabilities	$ 6,171	$ 6,183

Long-term debt - Narrative (Det

Long-term debt - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Sep. 29, 2021	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Debt Instrument [Line Items]
Amortization of debt issuance costs		$ 116	$ 116	$ 232	$ 232
Interest expense, debt		$ 2,146	$ 3,857	4,911	$ 7,687
Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 300,000
Repayments of long-term lines of credit				$ 60,000
Debt costs	$ 2,318
Effective interest rate on debt		7.40%		7.40%
Maximum net leverage ratio		3.50		3.50
Minimum interest coverage ratio		2.50		2.50
Credit Agreement | Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Commitment fee rate	0.20%
Credit Agreement | Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Commitment fee rate	0.35%
Credit Agreement | Revolving Credit Facility | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Credit Agreement | Revolving Credit Facility | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Credit Agreement | Revolving Credit Facility | SOFR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Credit Agreement | Revolving Credit Facility | SOFR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%
Credit Agreement | Revolving Credit Facility | Sterling | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.7826%
Credit Agreement | Revolving Credit Facility | Sterling | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	2.5326%
Credit Agreement | Revolving Credit Facility | Eurodollar | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.7956%
Credit Agreement | Revolving Credit Facility | Eurodollar | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	2.5456%
Credit Agreement | Letter of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 30,000
Credit Agreement | Alternative Currency
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	100,000
Credit Agreement | Term Loan
Debt Instrument [Line Items]
Incremental increases in maximum borrowing capacity	$ 5,000

Long-term debt - Schedule of Lo

Long-term debt - Schedule of Long-term Debt Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Less: unamortized debt issuance costs	$ (1,043)	$ (1,275)
Total carrying amount	93,957	153,725
Revolving Credit Facility
Debt Instrument [Line Items]
Revolver	$ 95,000	$ 155,000

Long-term debt - Schedule of Fu

Long-term debt - Schedule of Future Principal Payments of Long-term Debt (Details) $ in Thousands	Jun. 30, 2024 USD ($)
Maturities of Long-term Debt [Abstract]
2024	$ 0
2025	0
2026	95,000
Long-term debt	$ 95,000

Income taxes (Details)

Income taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Income tax provision (benefit)	$ 4,923	$ (29,107)	$ 4,789	$ (26,081)
Effective tax rate	39%	135.80%	42.70%	170.90%

Segment data - Narrative (Detai

Segment data - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) segment	Jun. 30, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment			1
Revenue	$ 129,005	$ 113,651	$ 243,535	$ 219,743
United States
Segment Reporting Information [Line Items]
Revenue	$ 84,498	$ 75,351	$ 158,782	$ 145,966

Segment data - Schedule of Reve

Segment data - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 129,005	$ 113,651	$ 243,535	$ 219,743
Total long-lived assets	25,299		25,299		$ 25,437
North and South America (“Americas”)
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	88,874	78,990	167,393	153,191
Total long-lived assets	13,035		13,035		13,848
Europe, Middle East and Africa (“EMEA”)
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	30,805	26,489	58,032	50,552
Total long-lived assets	7,382		7,382		8,577
Asia and Pacific Rim (“APAC”)
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	9,326	$ 8,172	18,110	$ 16,000
Total long-lived assets	$ 4,882		$ 4,882		$ 3,012

Stock-based compensation - Sche

Stock-based compensation - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 15,004	$ 40,435	$ 30,742	$ 51,741
Unamortized expense	136,916		136,916
2021 Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	13,925	15,137	28,109	24,285
Unamortized expense	134,628		134,628
Time-Based Options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	724	1,258	1,705	3,021
Unamortized expense	2,288		$ 2,288
Weighted Average Vesting Term			1 year
Time-Based Options | 2018 Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	191	725	$ 636	1,817
Time-Based Options | 2021 Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	533	533	1,069	1,204
Return-Target Options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	0	23,450	0	23,450
Unamortized expense	0		$ 0
Weighted Average Vesting Term			0 years
Return-Target Options | 2018 Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	0	20,326	$ 0	20,326
Return-Target Options | 2021 Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	0	3,124	0	3,124
LTIP | 2018 Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	0	317	0	317
Restricted stock units | 2021 Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	10,520	9,461	20,085	16,723
Unamortized expense	107,381		$ 107,381
Weighted Average Vesting Term			2 years 10 months 24 days
Market stock units | 2021 Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	3,405	5,676	$ 8,024	7,562
Unamortized expense	27,247		$ 27,247
Weighted Average Vesting Term			3 years 4 months 24 days
ESPP | 2021 Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	355	273	$ 928	668
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	82	126	206	210
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	3,435	8,258	9,173	12,145
Technology and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	4,799	7,362	9,198	10,532
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 6,688	$ 24,689	$ 12,165	$ 28,854

Stock-based compensation - Narr

Stock-based compensation - Narrative (Details) $ / shares in Units, $ in Thousands			3 Months Ended		4 Months Ended	6 Months Ended				26 Months Ended
	Jun. 29, 2021	Aug. 01, 2018 USD ($)	Jun. 30, 2024 USD ($) shares	Jun. 30, 2023 USD ($)	Apr. 30, 2022	Jun. 30, 2024 USD ($) day shares	Jan. 31, 2024 $ / shares shares	Jun. 30, 2023 USD ($)	Jan. 31, 2023 $ / shares shares	Jun. 30, 2024 USD ($) shares	Dec. 31, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense | $			$ 15,004	$ 40,435		$ 30,742		$ 51,741
2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense | $			13,925	15,137		28,109		24,285
Time-Based Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense | $			$ 724	1,258		$ 1,705		3,021
Stock options outstanding (in shares) | shares			3,016,339			3,016,339				3,016,339	3,060,388
Time-Based Options | 2018 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		4 years
Stock-based compensation expense | $			$ 191	725		$ 636		1,817
Time-Based Options | 2018 Plan | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		12 months
Award vesting rate (as a percent)		25%
Time-Based Options | 2018 Plan | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rate (as a percent)		6.25%
Time-Based Options | Amended and Restated 2018 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares) | shares			2,251,431			2,251,431				2,251,431
Time-Based Options | 2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense | $			$ 533	533		$ 1,069		1,204
Stock options outstanding (in shares) | shares			764,908			764,908				764,908
Return-Target Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense | $			$ 0	23,450		$ 0		23,450
Stock options outstanding (in shares) | shares			1,725,030			1,725,030				1,725,030	1,725,030
Return-Target Options | 2018 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum equity return multiple		3
Stock-based compensation expense | $			$ 0	20,326		$ 0		20,326
Return-Target Options | Amended and Restated 2018 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, vesting upon sale of share resulting in cash return, threshold | $		$ 1,170,000
Stock options outstanding (in shares) | shares			1,342,092			1,342,092				1,342,092
Return-Target Options | 2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense | $			$ 0	3,124		$ 0		3,124
Stock options outstanding (in shares) | shares			382,938			382,938				382,938
Stock Options | 2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares) | shares			1,147,846			1,147,846				1,147,846
Stock authorized for awards (in shares) | shares			43,059,189			43,059,189				43,059,189
Period of increase in stock reserved for future issuance	10 years
Increase in stock reserved for future issuance, proportion of common stock outstanding (as a percent)	5%
Restricted stock units | 2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period					4 years					4 years
Award vesting rate (as a percent)					25%					6.25%
Stock-based compensation expense | $			$ 10,520	9,461		$ 20,085		16,723
Market stock units | 2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period						4 years
Stock-based compensation expense | $			$ 3,405	$ 5,676		$ 8,024		$ 7,562
Vesting eligibility, payout factor calculation, measurement period for average closing stock price, number of trading days preceding vesting date | day						10
Vesting eligibility payout factor calculation, maximum quotient allowable for minimum payout factor (less than)						0.60
Market stock units | 2021 Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting eligibility, payout factor						0
Market stock units | 2021 Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting eligibility, payout factor						2.25
Market stock units | 2021 Plan | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rate (as a percent)						25%
Market stock units | 2021 Plan | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rate (as a percent)						6.25%
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock authorized for awards (in shares) | shares			6,161,033			6,161,033				6,161,033
Increase in stock reserved for future issuance, proportion of common stock outstanding (as a percent)						1%
Increase in stock reserved for future issuance, maximum shares of common stock allotted for ESPP (in shares) | shares			16,000,000			16,000,000				16,000,000
Maximum employee payroll deductions of eligible compensation for ESPP (as a percent)			15%			15%				15%
Maximum annual employee payroll deductions of eligible compensation for ESPP | $			$ 25			$ 25				$ 25
Purchase price of ESPP shares, percent						85%
Offering period						6 months
Stock issued under the ESPP (in shares) | shares							153,239		111,163
ESPP purchase (in dollars per share) | $ / shares							$ 12.37		$ 7.93
Shares available for future purchase under ESPP (in shares) | shares			5,734,225			5,734,225				5,734,225

Stock-based compensation - Sc_2

Stock-based compensation - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Time-Based Options
Stock options
Beginning balance outstanding (in shares)	3,060,388
Canceled or forfeited (in shares)	0
Exercised (in shares)	(44,049)
Ending balance outstanding (in shares)	3,016,339	3,060,388
Stock options vested and expected to vest (in shares)	3,016,339
Stock options exercisable (in shares)	2,806,960
Weighted average exercise price
Beginning balance outstanding (in dollars per share)	$ 7.70
Canceled or forfeited (in dollars per share)	0
Exercise price - exercised (in dollars per share)	7.10
Ending balance outstanding (in dollars per share)	7.70	$ 7.70
Weighted average exercise price of options vested and expected to vest (in dollars per share)	7.70
Weighted average exercise price of options exercisable (in dollars per share)	$ 7
Weighted average remaining contractual life (years)
Beginning balance outstanding	5 years 2 months 8 days	5 years 8 months 12 days
Ending balance outstanding	5 years 2 months 8 days	5 years 8 months 12 days
Weighted average remaining contractual life (years) of options vested and expected to vest	5 years 2 months 8 days
Weighted average remaining contractual life (years) of options exercisable	5 years 21 days
Aggregate intrinsic value
Beginning balance outstanding	$ 23,251
Ending balance outstanding	12,415	$ 23,251
Aggregate intrinsic value of options vested and expected to vest	12,415
Aggregate intrinsic value of options exercisable	$ 12,395
Return-Target Options
Stock options
Beginning balance outstanding (in shares)	1,725,030
Canceled or forfeited (in shares)	0
Exercised (in shares)	0
Ending balance outstanding (in shares)	1,725,030	1,725,030
Stock options vested and expected to vest (in shares)	1,725,030
Stock options exercisable (in shares)	0
Weighted average exercise price
Beginning balance outstanding (in dollars per share)	$ 7.47
Canceled or forfeited (in dollars per share)	0
Exercise price - exercised (in dollars per share)	0
Ending balance outstanding (in dollars per share)	7.47	$ 7.47
Weighted average exercise price of options vested and expected to vest (in dollars per share)	7.47
Weighted average exercise price of options exercisable (in dollars per share)	$ 0
Weighted average remaining contractual life (years)
Beginning balance outstanding	5 years 3 months 10 days	5 years 9 months 10 days
Ending balance outstanding	5 years 3 months 10 days	5 years 9 months 10 days
Weighted average remaining contractual life (years) of options vested and expected to vest	5 years 3 months 10 days
Aggregate intrinsic value
Beginning balance outstanding	$ 13,318
Ending balance outstanding	7,051	$ 13,318
Aggregate intrinsic value of options vested and expected to vest	7,051
Aggregate intrinsic value of options exercisable	$ 0

Stock-based compensation - Sc_3

Stock-based compensation - Schedule of Restricted Stock Unit and Market Stock Unit Activity (Details)	6 Months Ended
	Jun. 30, 2024 $ / shares shares
RSUs
Number of Shares
Beginning balance outstanding (in shares)	9,014,435
Granted (in shares)	3,752,803
Canceled or forfeited (in shares)	(1,208,161)
Vested (in shares)	(1,499,394)
Ending balance outstanding (in shares)	10,059,683
Units expected to vest (in shares)	10,059,683
Weighted Average Grant Date Fair Value
Beginning balance outstanding (in dollars per share) | $ / shares	$ 12.41
Granted (in dollars per share) | $ / shares	10.32
Canceled or forfeited (in dollars per share) | $ / shares	11.13
Vested (in dollars per share) | $ / shares	12.07
Ending balance outstanding (in dollars per share) | $ / shares	$ 11.83
MSUs
Number of Shares
Beginning balance outstanding (in shares)	1,800,486
Granted (in shares)	1,395,332
Canceled or forfeited (in shares)	(209,532)
Change in awards based on performance (in shares)	(97,044)
Vested (in shares)	(332,438)
Ending balance outstanding (in shares)	2,556,804
Units expected to vest (in shares)	2,556,804
Weighted Average Grant Date Fair Value
Beginning balance outstanding (in dollars per share) | $ / shares	$ 19.28
Granted (in dollars per share) | $ / shares	14.86
Canceled or forfeited (in dollars per share) | $ / shares	21.05
Change in awards based on performance (in dollars per share) | $ / shares	21.60
Vested (in dollars per share) | $ / shares	19.82
Ending balance outstanding (in dollars per share) | $ / shares	$ 16.68

Stockholders' equity (Details)

Stockholders' equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	500,000,000		500,000,000		500,000,000
Common stock, par value (in dollars per share)	$ 0.001		$ 0.001		$ 0.001
Preferred stock, shares authorized (in shares)	50,000,000		50,000,000		50,000,000
Preferred stock, par value (in dollars per share)	$ 0.001		$ 0.001		$ 0.001
Option exercises		$ 2,878	$ 313	$ 4,993
Common Stock
Class of Stock [Line Items]
Stock issued during period for vested units (in shares)	1,025,286	1,218,542	1,831,832	1,590,282
Option exercises (in shares)		248,553	44,049	587,502
Stock issued under the ESPP (in shares)			153,239	111,163

Commitments and contingencies (

Commitments and contingencies (Details) $ in Thousands	Jun. 30, 2024 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Purchase obligation	$ 135,550

Net income per share - Schedule

Net income per share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator:
Net income	$ 7,690	$ 7,677	$ 6,435	$ 10,823
Denominator:
Weighted-average shares outstanding, basic (in shares)	160,502,795	155,425,264	159,954,926	155,267,531
Dilutive effect of stock-based awards (in shares)	3,245,801	7,209,046	4,243,307	5,582,903
Weighted-average shares outstanding, diluted (in shares)	163,748,596	162,634,310	164,198,233	160,850,434
Net income per share
Basic (in dollars per share)	$ 0.05	$ 0.05	$ 0.04	$ 0.07
Diluted (in dollars per share)	$ 0.05	$ 0.05	$ 0.04	$ 0.07

Net income per share -Schedule

Net income per share -Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	11,707,828	1,825,069	5,929,809	3,417,493
Options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	1,175,071	1,472,891	1,187,222	1,987,605
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	8,586,149	352,178	3,485,769	556,557
Market stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	1,946,608	0	1,256,818	873,331

Fair value disclosures (Details

Fair value disclosures (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Money market funds | Level 1
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	$ 15,730	$ 15,331

Related-party transactions (Det

Related-party transactions (Details) - USD ($)	1 Months Ended		2 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2023	May 31, 2023	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Related Party Transaction [Line Items]
Incurred expenses				$ 24,679,000	$ 42,339,000	$ 46,059,000	$ 63,062,000
Due to related party				0		0		$ 121,000
Related Party | Travel and Other
Related Party Transaction [Line Items]
Incurred expenses				2,000	$ 18,000	18,000	$ 43,000
Due to related party				$ 0		$ 0		$ 30,000
Related Party | Sale Of Stock
Related Party Transaction [Line Items]
Proceeds from sale of stock			$ 0
Costs for sale of stock			$ 1,404,000
Related Party | Sale Of Stock | Secondary Offering
Related Party Transaction [Line Items]
Number of shares issued in sale of stock (in shares)		11,500,000
Related Party | Sale Of Stock | Block Trade
Related Party Transaction [Line Items]
Number of shares issued in sale of stock (in shares)	5,220,000

Restructuring - Narrative (Deta

Restructuring - Narrative (Details)		6 Months Ended
	Dec. 07, 2022 employee	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Restructuring and Related Activities [Abstract]
Approximate workforce reduction, number of employees | employee	120
Restructuring activity during the period		$ 0
Remaining liability			$ 0	$ 315,000	$ 4,315,000

Restructuring - Schedule of Res

Restructuring - Schedule of Restructuring Reserve Activity (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
Restructuring Reserve [Roll Forward]
Beginning balance	$ 4,315
Payments and impact of FX	(4,000)
Ending balance	$ 315

Uncategorized Items - ias-20240

Label	Element	Value
Accounting Standards Update [Extensible Enumeration]	us-gaap_AccountingStandardsUpdateExtensibleList	Accounting Standards Update 2016-13 [Member]