ZipRecruiter (ZIP) 10-Q 13 Aug 21 2021 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jun. 30, 2021	Aug. 05, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	001-40406
Entity Registrant Name	ZIPRECRUITER, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-2976158
Entity Address, Address Line One	604 Arizona Ave.
Entity Address, City or Town	Santa Monica,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90401
City Area Code	(877)
Local Phone Number	252-1062
Title of 12(b) Security	Class A common stock, $0.00001 par value per share
Trading Symbol	ZIP
Security Exchange Name	NYSE
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Central Index Key	0001617553
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Amendment Flag	false
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		83,071,919
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		32,036,223

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets
Cash	$ 153,342	$ 114,539
Accounts receivable, net of allowances of $3,891 and $3,933 at June 30, 2021 and December 31, 2020, respectively	36,312	21,036
Prepaid expenses and other assets	13,106	5,462
Deferred commissions, current portion	4,103	3,727
Total current assets	206,863	144,764
Property and equipment, net	8,935	5,043
Operating lease right-of-use assets	19,709	22,500
Internal use software, net	12,210	11,191
Deferred commissions, net of current portion	3,474	3,712
Goodwill	1,724	1,724
Deferred tax assets, net	36,526	23,083
Other assets	1,300	112
Total assets	290,741	212,129
Current liabilities
Accounts payable	31,978	13,509
Accrued expenses	54,699	38,842
Deferred revenue	23,081	15,112
Deferred payroll tax liability, current portion	1,677	1,677
Operating lease liabilities, current portion	5,137	1,669
Other liabilities	114	646
Total current liabilities	116,686	71,455
Operating lease liabilities, net of current portion	21,479	25,130
Convertible notes and accrued interest with related parties	0	25,371
Deferred payroll tax liability, net of current portion	1,829	1,818
Other liabilities	1,845	1,795
Total liabilities	141,839	125,569
Commitments and contingencies (Note 8)
Redeemable convertible preferred stock
Total redeemable convertible preferred stock	0	136,856
Stockholders' equity (deficit)
Preferred Stock, $0.00001 par value; 50,000 and no shares authorized as of June 30, 2021 and December 31, 2020, respectively; no shares issued and outstanding as June 30, 2021 and December 31, 2020, respectively	0	0
Class B treasury stock, 195 shares outstanding as of June 30, 2021 and December 31, 2020	(644)	(644)
Additional paid-in capital	260,378	21,732
Accumulated deficit	(110,833)	(71,384)
Total stockholders' equity (deficit)	148,902	(50,296)
Total liabilities, redeemable convertible preferred stock, and stockholders' equity (deficit)	290,741	212,129
Series A Preferred Stock
Redeemable convertible preferred stock
Total redeemable convertible preferred stock	0	87,118
Series B Preferred Stock
Redeemable convertible preferred stock
Total redeemable convertible preferred stock	0	49,738
Common Class A
Stockholders' equity (deficit)
Common stock	1	0
Common Class B
Stockholders' equity (deficit)
Common stock	$ 0	$ 0

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets
Accounts receivable, allowance for credit loss, current	$ 3,891	$ 3,933
Stockholders' equity (deficit)
Preferred stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Preferred stock, authorized (in shares)	50,000,000	0
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.00001
Common stock, authorized (in shares)	1,450,000,000
Treasury stock (in shares)	195,000	195,000
Series A Preferred Stock
Redeemable convertible preferred stock
Redeemable convertible preferred stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Redeemable convertible preferred stock, authorized (in shares)	0	2,271,000
Redeemable convertible preferred stock, issued (in shares)	0	2,271,000
Redeemable convertible preferred stock, outstanding (in shares)	0	2,271,000
Series B Preferred Stock
Redeemable convertible preferred stock
Redeemable convertible preferred stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Redeemable convertible preferred stock, authorized (in shares)	0	6,151,000
Redeemable convertible preferred stock, issued (in shares)	0	6,031,000
Redeemable convertible preferred stock, outstanding (in shares)	0	6,031,000
Common Class A
Stockholders' equity (deficit)
Common stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Common stock, authorized (in shares)	700,000,000	0
Common stock, issued (in shares)	82,714,000	0
Common stock, outstanding (in shares)	82,714,000	0
Common Class B
Stockholders' equity (deficit)
Common stock, par value (in dollars per share)	$ 0.00001
Common stock, authorized (in shares)	700,000,000	137,800,000
Common stock, issued (in shares)	32,231,000	78,283,000
Common stock, outstanding (in shares)	32,036,000	78,088,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Revenue	$ 182,960	$ 87,655	$ 308,332	$ 200,947
Cost of revenue	21,600	11,840	37,561	26,312
Gross profit	161,360	75,815	270,771	174,635
Operating expenses:
Sales and marketing	114,171	28,069	177,647	106,949
Research and development	37,909	16,306	54,924	35,532
General and administrative	77,597	9,792	90,051	21,280
Total operating expenses	229,677	54,167	322,622	163,761
Income (loss) from operations	(68,317)	21,648	(51,851)	10,874
Other income (expense)
Interest expense	(266)	(367)	(475)	(646)
Sublease income (expense)	(141)	275	151	557
Other income (expense), net	(40)	(68)	54	(212)
Total other expense, net	(447)	(160)	(270)	(301)
Income (loss) before income taxes	(68,764)	21,488	(52,121)	10,573
Income tax expense (benefit)	(15,917)	165	(12,672)	332
Net income (loss)	(52,847)	21,323	(39,449)	10,241
Less: Accretion of redeemable convertible preferred stock	(483)	(956)	(1,480)	(1,911)
Less: Undistributed earnings attributable to participating securities	0	(4,745)	0	(1,943)
Net income (loss) attributable to Class A and Class B common stockholders	$ (53,330)	$ 15,622	$ (40,929)	$ 6,387
Net income (loss) per share attributable to Class A and Class B common stockholders:
Basic (in dollars per share)	$ (0.55)	$ 0.20	$ (0.47)	$ 0.08
Diluted (in dollars per share)	$ (0.55)	$ 0.18	$ (0.47)	$ 0.07
Weighted average shares used in computing net income (loss) per share attributable to Class A and Class B common stockholders:
Basic (in shares)	96,726	79,681	87,829	79,552
Diluted (in shares)	96,726	91,290	87,829	91,581

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Changes in Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Conversion of redeemable convertible preferred stock to common stock	Conversion of convertible notes with related parties to common stock	Conversion of Class B stock to Class A stock	Cumulative-effect of accounting change adopted as of January 1, 2020	Common Stock	Treasury Stock	Additional Paid-in Capital	Additional Paid-in CapitalConversion of redeemable convertible preferred stock to common stock	Additional Paid-in CapitalConversion of convertible notes with related parties to common stock	Additional Paid-in CapitalCumulative-effect of accounting change adopted as of January 1, 2020	Retained Earnings	Retained EarningsCumulative-effect of accounting change adopted as of January 1, 2020	Series A Preferred Stock	Series B Preferred Stock	Common Class ACommon Stock	Common Class ACommon StockConversion of Class B stock to Class A stock	Common Class BCommon Stock	Common Class BCommon StockConversion of redeemable convertible preferred stock to common stock	Common Class BCommon StockConversion of convertible notes with related parties to common stock	Common Class BCommon StockConversion of Class B stock to Class A stock
Beginning balance (in shares) at Dec. 31, 2019														2,271,000	6,031,000
Beginning balance at Dec. 31, 2019														$ 83,375	$ 49,598
Redeemable Convertible Preferred Stock
Accretion of redeemable convertible preferred stock														$ 920	$ 35
Ending balance (in shares) at Mar. 31, 2020														2,271,000	6,031,000
Ending balance at Mar. 31, 2020														$ 84,295	$ 49,633
Beginning balance (in shares) at Dec. 31, 2019							(195,000)									0		79,583,000
Beginning balance at Dec. 31, 2019	$ (122,311)				$ 0		$ (644)	$ 35,339			$ 426	$ (157,006)	$ (426)			$ 0		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accretion of redeemable convertible preferred stock	(955)							(955)
Issuance of common stock upon exercise of options (in shares)						572,000
Issuance of common stock upon exercise of options	305							305
Stock-based compensation	1,994							1,994
Capital contribution (in shares)						(213,000)
Net income (loss)	(11,082)											(11,082)
Ending balance at Mar. 31, 2020	(132,049)						$ (644)	37,109				(168,514)				$ 0		$ 0
Ending balance (in shares) at Mar. 31, 2020							(195,000)									0		79,942,000
Beginning balance (in shares) at Dec. 31, 2019														2,271,000	6,031,000
Beginning balance at Dec. 31, 2019														$ 83,375	$ 49,598
Ending balance (in shares) at Jun. 30, 2020														2,271,000	6,031,000
Ending balance at Jun. 30, 2020														$ 85,216	$ 49,668
Beginning balance (in shares) at Dec. 31, 2019							(195,000)									0		79,583,000
Beginning balance at Dec. 31, 2019	(122,311)				$ 0		$ (644)	35,339			$ 426	(157,006)	$ (426)			$ 0		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	10,241
Ending balance at Jun. 30, 2020	(109,597)						$ (644)	38,238				(147,191)				$ 0		$ 0
Ending balance (in shares) at Jun. 30, 2020							(195,000)									0		80,401,000
Beginning balance (in shares) at Mar. 31, 2020														2,271,000	6,031,000
Beginning balance at Mar. 31, 2020														$ 84,295	$ 49,633
Redeemable Convertible Preferred Stock
Accretion of redeemable convertible preferred stock														$ 921	$ 35
Ending balance (in shares) at Jun. 30, 2020														2,271,000	6,031,000
Ending balance at Jun. 30, 2020														$ 85,216	$ 49,668
Beginning balance (in shares) at Mar. 31, 2020							(195,000)									0		79,942,000
Beginning balance at Mar. 31, 2020	(132,049)						$ (644)	37,109				(168,514)				$ 0		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accretion of redeemable convertible preferred stock	(956)							(956)
Issuance of common stock upon exercise of options (in shares)						672,000
Issuance of common stock upon exercise of options	699							699
Stock-based compensation	1,386							1,386
Capital contribution (in shares)						(213,000)
Net income (loss)	21,323											21,323
Ending balance at Jun. 30, 2020	(109,597)						$ (644)	38,238				(147,191)				$ 0		$ 0
Ending balance (in shares) at Jun. 30, 2020							(195,000)									0		80,401,000
Beginning balance (in shares) at Dec. 31, 2020														2,271,000	6,031,000
Beginning balance at Dec. 31, 2020	136,856													$ 87,118	$ 49,738
Redeemable Convertible Preferred Stock
Accretion of redeemable convertible preferred stock														$ 961	$ 36
Ending balance (in shares) at Mar. 31, 2021														2,271,000	6,031,000
Ending balance at Mar. 31, 2021														$ 88,079	$ 49,774
Beginning balance (in shares) at Dec. 31, 2020							(195,000)									0		78,283,000
Beginning balance at Dec. 31, 2020	(50,296)						$ (644)	21,732				(71,384)				$ 0		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accretion of redeemable convertible preferred stock	(997)							(997)
Issuance of common stock upon exercise of options (in shares)																		1,965,000
Issuance of common stock upon exercise of options	3,660							3,660
Repurchase and retirement of common stock (in shares)																		(50,000)
Repurchase and retirement of common stock	(450)							(450)
Stock-based compensation	1,290							1,290
Net income (loss)	13,398											13,398
Ending balance at Mar. 31, 2021	(33,395)						$ (644)	25,235				(57,986)				$ 0		$ 0
Ending balance (in shares) at Mar. 31, 2021							(195,000)									0		80,198,000
Beginning balance (in shares) at Dec. 31, 2020														2,271,000	6,031,000
Beginning balance at Dec. 31, 2020	136,856													$ 87,118	$ 49,738
Ending balance (in shares) at Jun. 30, 2021														0	0
Ending balance at Jun. 30, 2021	0													$ 0	$ 0
Beginning balance (in shares) at Dec. 31, 2020							(195,000)									0		78,283,000
Beginning balance at Dec. 31, 2020	$ (50,296)						$ (644)	21,732				(71,384)				$ 0		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of options (in shares)	115,000
Net income (loss)	$ (39,449)
Ending balance at Jun. 30, 2021	148,902						$ (644)	260,378				(110,833)				$ 1		$ 0
Ending balance (in shares) at Jun. 30, 2021							(195,000)									82,714,000		32,231,000
Beginning balance (in shares) at Mar. 31, 2021														2,271,000	6,031,000
Beginning balance at Mar. 31, 2021														$ 88,079	$ 49,774
Redeemable Convertible Preferred Stock
Accretion of redeemable convertible preferred stock														$ 466	$ 17
Conversion of redeemable convertible preferred stock to common stock (in shares)														(2,271,000)	(6,031,000)
Conversion of redeemable convertible preferred stock to common stock														$ (88,545)	$ (49,791)
Ending balance (in shares) at Jun. 30, 2021														0	0
Ending balance at Jun. 30, 2021	0													$ 0	$ 0
Beginning balance (in shares) at Mar. 31, 2021							(195,000)									0		80,198,000
Beginning balance at Mar. 31, 2021	(33,395)						$ (644)	25,235				(57,986)				$ 0		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accretion of redeemable convertible preferred stock	(483)							(483)
Conversion of shares (in shares)																	82,714,000		24,202,000	3,085,000	(82,714,000)
Conversion of shares		$ 138,336	$ 25,653	$ 0					$ 138,335	$ 25,653							$ 1		$ 1		$ (1)
Issuance of common stock upon exercise of options (in shares)																		5,282,000
Issuance of common stock upon exercise of options	8,720							8,720
Repurchase and retirement of common stock (in shares)																		(100,000)
Repurchase and retirement of common stock	(2,300)							(2,300)
Vesting of early exercised stock options	97							97
Issuance of common stock upon the vesting and settlement of restricted stock units (in shares)																		2,278,000
Stock-based compensation	65,121							65,121
Net income (loss)	(52,847)											(52,847)
Ending balance at Jun. 30, 2021	$ 148,902						$ (644)	$ 260,378				$ (110,833)				$ 1		$ 0
Ending balance (in shares) at Jun. 30, 2021							(195,000)									82,714,000		32,231,000

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Net income (loss)	$ (39,449)	$ 10,241
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Stock-based compensation expense	65,592	3,304
Depreciation and amortization	4,535	5,041
Provision for bad debts	679	2,359
Deferred income taxes	(13,443)	0
Noncash lease expense	2,791	2,800
Amortization of issuance costs for credit facility	43	0
Loss on disposal of property and equipment	14	329
Change in operating assets and liabilities:
Accounts receivable	(15,955)	7,068
Prepaid expenses and other current assets	(8,196)	1,503
Deferred commissions, net	(138)	(1,753)
Other assets	39	108
Accounts payable	18,480	(317)
Accrued expenses and other liabilities	14,919	(16,356)
Deferred revenue	7,987	(2,504)
Deferred payroll taxes	0	1,467
Operating lease liabilities	(183)	(3,420)
Net cash provided by operating activities	37,715	9,870
Cash flows from investing activities
Purchases of property and equipment	(4,429)	(871)
Capitalized internal use software costs	(3,786)	(3,815)
Net cash used in investing activities	(8,215)	(4,686)
Cash flows from financing activities
Proceeds from term loan	0	10,000
Repayment of term loan	0	(20,000)
Proceeds from revolving line	0	16,500
Repayment of revolving line	0	(16,500)
Proceeds from convertible notes with related parties	0	25,000
Payment of issuance costs for credit facility	(1,270)	0
Repurchase of common stock	(2,750)	0
Proceeds from exercise of stock options	13,323	485
Net cash provided by financing activities	9,303	15,485
Net increase in cash	38,803	20,669
Beginning of period	114,539	35,529
End of period	153,342	56,198
Supplemental disclosure of non-cash activities
Capitalized assets included in accounts payable and accrued expenses	1,535	513
Stock-based compensation capitalized for software	819	76
In-transit proceeds from exercise of stock options	21	519
Operating lease right-of-use assets obtained in exchange for new operating lease	0	5,787
Accretion of redeemable convertible preferred stock	1,480	1,911
Conversion of redeemable convertible preferred stock	138,336	0
Conversion of convertible notes and accrued interest with related parties	$ 25,653	$ 0

Description of Business

Description of Business	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business ZipRecruiter, Inc. was incorporated in the state of Delaware on June 29, 2010. Hereinafter, ZipRecruiter, Inc. and its wholly owned subsidiaries ZipRecruiter Israel Ltd., ZipRecruiter UK Ltd., and ZipRecruiter Canada Ltd. are collectively referred to as “ZipRecruiter” or the “Company.” The Company is a two-sided marketplace that enables employers and job seekers to connect with one another online to fill job opportunities. Direct Listing On May 14, 2021, the Company’s registration statement related to the direct listing of its Class A common stock on the New York Stock Exchange (“NYSE”) (the “Direct Listing”) was declared effective by the Securities and Exchange Commission (“SEC”) and on May 26, 2021, the Direct Listing was completed and the Company’s Class A common stock commenced trading. Immediately prior to the completion of the Direct Listing, the Company filed its amended and restated certificate of incorporation, which resulted in the creation of Class A common stock and Class B common stock. All existing shares of common stock issued and outstanding or held as treasury stock were reclassified into shares of Class B common stock. In connection with the effectiveness of the Direct Listing, all 2.3 million outstanding shares of Series A Redeemable Convertible Preferred Stock (“Series A preferred stock”) and 6.0 million outstanding shares of Series B Redeemable Convertible Preferred Stock (“Series B preferred stock”) converted into 24.2 million shares of Class B common stock. On May 26, 2021, the Company’s convertible notes with related parties converted into 3.1 million shares of Class B common stock.

Basis of Presentation, Principl

Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies	Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information. Accordingly, certain information and disclosures normally included in consolidated financial statements presented in accordance with U.S. GAAP have been condensed or omitted. The condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. The accompanying condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s final prospectus filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended, on May 26, 2021 (the “Prospectus”). The consolidated balance sheet as of December 31, 2020 has been derived from our audited consolidated financial statements. In the opinion of the Company’s management, the accompanying unaudited condensed consolidated financial statements include all adjustments (consisting of normal recurring adjustments) necessary for the fair statement of the condensed consolidated financial statements. There have been no changes in the Company’s accounting policies from those disclosed in its audited consolidated financial statements and the related notes included in the Prospectus. The operating results for the three and six months ended June 30, 2021 are not necessarily indicative of the results expected for the full year ending December 31, 2021 or any future period. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Significant estimates include revenue recognition, estimates relating to the measurement of operating lease right-of-use (“ROU”) assets and operating lease liabilities, determination of the fair value of stock-based awards, valuation of common stock in periods prior to becoming a public company, collectability of accounts receivable, impairment of long-lived assets, including goodwill, carrying value and useful lives of property and equipment and internal-use software, the amortization period for deferred commission costs, and income taxes. By their nature, estimates are subject to an inherent degree of uncertainty and actual results could differ from those estimates. The impact of the Coronavirus pandemic (“COVID-19”) continues to evolve. As a result, many of the Company’s estimates and assumptions require increased judgment and carry a higher degree of variability and volatility. As of the date these condensed consolidated financial statements are issued, the Company is not aware of any specific event or circumstance that would require an update to the Company’s estimates or judgments, or change to the carrying value of the Company’s assets or liabilities. However, these estimates and judgments may change as new events occur and additional information is obtained, which may result in changes being recognized in the consolidated financial statements in future periods. Actual results could differ from those estimates and any such differences may have a material impact on the financial statements. Fair Value Measurements Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. Accounting standards describe a fair value hierarchy based on the following three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value: - Level 1 — Quoted prices in active markets for identical assets, liabilities, or funds. - Level 2 — Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. - Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The carrying amounts of the Company’s financial instruments, including accounts receivable, accounts payable, and accrued expenses approximate fair value because of their short-term maturities. The fair value of the Company’s convertible notes with related parties as of December 31, 2020 was estimated to be approximately $36.9 million, and was based on the value of shares into which the notes convert. The value of the shares represents a Level 3 input in the fair value hierarchy. The convertible notes with related parties converted into shares of Class B common stock in connection with the Direct Listing in May 2021. Certain assets, including goodwill and intangible assets are also subject to measurement at fair value on a non-recurring basis using Level 3 inputs, but only when they are deemed to be impaired. As of June 30, 2021 and December 31, 2020, no impairments were identified on those assets required to be measured at fair value on a non-recurring basis. Segments and Geographic Information The Company operates as a single operating segment. The Company’s Chief Operating Decision Maker (“CODM”), the Chief Executive Officer, regularly reviews financial information presented on a consolidated basis for purposes of assessing financial performance and allocating resources. Stock-based Compensation for Awards with a Market Condition In April 2021, the Company granted a RSU award (the “CEO Performance Award”), which included service, market, and performance based vesting conditions. The fair value of the award is determined using a Monte Carlo simulation model. The associated stock-based compensation is recorded over the requisite service period, using a graded attribution method. The requisite service period is the longer of the service period derived from the Monte Carlo simulation model and the explicit service period the CEO is required to remain employed to vest in the award. The market condition is satisfied upon achieving certain stock price targets for a period following the completion of the Company’s Direct Listing. The CEO Performance Award also contains an implied performance-based vesting condition as the CEO’s ability to earn the award is contingent upon the completion of the Direct Listing. Accordingly, no expense was recognized prior to the completion of the Company’s Direct Listing on May 26, 2021, as vesting was not considered probable for accounting purposes until the Direct Listing occurred. Provided that Ian Siegel continues to be the CEO of the Company, stock-based compensation expense is recognized over the requisite service period, regardless of whether the stock price targets are achieved. If the stock price targets are met sooner than the derived service period, the Company will accelerate the recognition of stock-based compensation expense to reflect the cumulative expense associated with the vested shares. The determination of the fair value of stock-based awards with a market condition is inherently uncertain and subjective and involves the application of valuation models and assumptions requiring the use of judgment. If the Company had made different assumptions, its stock-based compensation expense, and its results of operations for the three and six months ended June 30, 2021 and June 30, 2020 may have been significantly different. Recent Accounting Pronouncements Accounting Pronouncements Not Yet Adopted As an “emerging growth company,” the Company is allowed by the Jumpstart Our Business Startups Act to delay adoption of new or revised accounting pronouncements applicable to public companies until such pronouncements are made applicable to private companies. The Company has elected to use the adoption dates applicable to private companies. As a result, the Company’s financial statements may not be comparable to the financial statements of issuers who are required to comply with the effective date for new or revised accounting standards that are applicable to public companies. In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which replaces the existing model for measuring the allowance for credit losses for financial assets measured at amortized cost (including accounts receivable) to a model that is based on the expected losses rather than incurred losses. Under the new credit loss model, lifetime expected credit losses on such financial assets are measured and recognized at each reporting date based on historical, current, and forecast information. In November 2018, the FASB issued ASU No. 2018-19, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, and in April 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments – Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. These ASUs provide supplemental guidance and clarification to ASU 2016-13 and must be adopted concurrently with the adoption of ASU 2016-13, cumulatively referred to as “Topic 326.” This guidance is effective for fiscal years beginning after December 15, 2022 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the effects of the adoption of this update on its consolidated financial statements. In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which enhances and simplifies various aspects of income tax accounting guidance. This guidance is effective for fiscal years beginning after December 15, 2021, and interim periods within fiscal years beginning after December 15, 2022. Early adoption is permitted, including adoption in an interim period. An entity that elects to early adopt ASU 2019-12 in an interim period should reflect any adjustments as of the beginning of the annual period that includes that interim period. The Company is currently evaluating the effects of the adoption of this update on its consolidated financial statements. In August 2020, the FASB issued ASU 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, which simplifies the accounting for certain convertible instruments, amends the guidance on derivative scope exceptions for contracts in an entity’s own equity, and modifies the guidance on diluted earnings per share calculations as a result of these changes. This guidance is effective for fiscal years beginning after December 15, 2023 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the effects of the adoption of this update on its consolidated financial statements. Recently Adopted Accounting Pronouncements

Net Income (Loss) Per Share

Net Income (Loss) Per Share	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	Net Income (Loss) Per Share Basic and diluted net income (loss) per share are computed using the two-class method as required when there are participating securities and multiple classes of common stock. Prior to May 14, 2021, when the Company’s Series A and B redeemable convertible preferred stock converted into shares of Class B common stock, the Company’s redeemable convertible preferred stock were participating securities as the holders of the redeemable convertible preferred stock were entitled to participate in dividends with common stock. In periods of net income, net income after deducting the accretion of redeemable convertible preferred stock was attributed to common stockholders and participating securities based on their participation rights. Net losses after deducting the accretion of redeemable convertible preferred stock are not allocated to the participating securities as the participating securities do not have a contractual obligation to share in any losses. In April 2021, the Company filed its amended and restated certificate of incorporation, which resulted in the creation of Class A common stock and Class B common stock. As the liquidation and dividend rights are identical for Class A and Class B common stock (see Note 9), the undistributed earnings under the two-class method are allocated on a proportional basis and the resulting net income (loss) per share attributable to common stockholders will, therefore, be the same for both Class A and Class B common stock on an individual or combined basis. The following table presents the Company’s basic net income (loss) per share (in thousands, except per share amounts): Three Months Ended Six Months Ended 2021 2020 2021 2020 Net income (loss) per share, basic: Net income (loss) $ (52,847) $ 21,323 $ (39,449) $ 10,241 Less: Accretion of redeemable convertible preferred stock (483) (956) (1,480) (1,911) Less: Undistributed earnings attributable to participating securities — (4,745) — (1,943) Net income (loss) attributable to Class A and Class B common stockholders $ (53,330) $ 15,622 $ (40,929) $ 6,387 Weighted average shares of Class A and Class B common stock outstanding 96,726 79,681 87,829 79,552 Net income (loss) per share attributable to Class A and Class B common stockholders, basic $ (0.55) $ 0.20 $ (0.47) $ 0.08 On April 19, 2021, the Company’s board of directors waived the liquidity event-based performance condition such that the RSUs that had satisfied the service condition would vest upon the earlier of the first day of trading of the Company’s common stock on the New York Stock Exchange or March 15, 2022. As vesting of the Company’s RSUs was now probable after the modification, these awards were considered in the diluted net income (loss) per share calculation on and after April 19, 2021. During the three and six months ended June 30, 2021, unvested RSU awards were excluded from the calculation of diluted net loss per share because their inclusion would have been anti-dilutive. The following table presents the Company’s diluted net income (loss) per share (in thousands, except per share amounts): Three Months Ended Six Months Ended 2021 2020 2021 2020 Net income (loss) per share, diluted: Numerator: Net income (loss) attributable to Class A and Class B common stockholders $ (53,330) $ 15,622 $ (40,929) $ 6,387 Add: Reallocation of net income attributable to participating securities — 477 — 202 Interest on convertible notes with related parties, net of tax — 11 — — Net income (loss) attributable to Class A and Class B common stockholders, diluted $ (53,330) $ 16,110 $ (40,929) $ 6,589 Denominator: Weighted average shares of Class A and Class B common stock outstanding, basic 96,726 79,681 87,829 79,552 Effect of dilutive securities: Options to purchase common stock — 11,236 — 12,029 Convertible notes with related parties — 373 — — Weighted average shares of Class A and Class B common stock outstanding, diluted 96,726 91,290 87,829 91,581 Net income (loss) per share attributable to Class A and Class B common stockholders, diluted $ (0.55) $ 0.18 $ (0.47) $ 0.07 The following table presents the weighted average number of potentially dilutive common stock equivalents excluded from the computation of diluted net income (loss) per share because their inclusion would have been anti-dilutive (in thousands): Three Months Ended Six Months Ended 2021 2020 2021 2020 Options to purchase common stock 15,521 6,643 17,065 5,499 Restricted stock units 6,078 3,921 5,820 3,550 Redeemable convertible preferred stock, if converted basis 11,436 — 17,784 — Convertible notes with related parties, if converted basis 1,860 — 2,457 187 Unvested early exercise common stock 61 — 31 — Total shares excluded from diluted net income (loss) per share 34,956 10,564 43,157 9,236

Revenue Information

Revenue Information	6 Months Ended
	Jun. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue Information	Revenue Information The Company disaggregates revenue into two streams: subscription revenue and performance-based revenue. The following table presents the Company’s revenue streams (in thousands): Three Months Ended Six Months Ended 2021 2020 2021 2020 Subscription $ 151,292 $ 74,002 $ 251,796 $ 169,367 Performance-based 31,668 13,653 56,536 31,580 Total revenue $ 182,960 $ 87,655 $ 308,332 $ 200,947 The Company recognized $15.5 million and $14.4 million of revenues during the three months ended June 30, 2021 and 2020, respectively, that was included in the deferred revenue balances as of March 31, 2021 and 2020, respectively. The Company recognized $11.4 million and $13.9 million of revenues during the six months ended June 30, 2021 and 2020, respectively, that was included in the deferred revenue balances as of December 31, 2020 and 2019, respectively. As of June 30, 2021 and December 31, 2020, the Company had no contract assets outstanding. Performance Obligations

Accrued Expenses

Accrued Expenses	6 Months Ended
	Jun. 30, 2021
Payables and Accruals [Abstract]
Accrued Expenses	Accrued Expenses Accrued expenses consist of the following (in thousands): June 30, December 31, 2021 2020 Accrued marketing $ 18,578 $ 6,006 Accrued bonuses 6,626 11,202 Other accrued expenses 10,542 7,311 Accrued partner expenses 7,031 5,554 Accrued 401(k) contributions 1,458 2,414 Accrued commissions 5,301 3,332 Accrued indirect taxes 1,238 600 Accrued refunds and customer liabilities 3,925 2,423 Total accrued expenses $ 54,699 $ 38,842

Credit Facility

Credit Facility	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Credit Facility	Credit FacilityIn April 2021, the Company terminated its existing revolving credit agreement from September 2020 and entered into a new $250.0 million credit facility agreement with a syndicate of banks. The new credit facility has a maturity date of April 30, 2026 and bears interest at a rate based upon the Company’s Net Leverage Ratio. The Company’s Net Leverage Ratio is defined as total debt less total cash and permitted investments outstanding at period end, with a maximum total cash and permitted investments adjustment of $100.0 million, divided by the trailing twelve month of earnings, adjusted for items such as noncash expenses and other nonrecurring transactions. The Company is also obligated to pay other customary fees including a commitment fee on a quarterly basis based on amounts committed but unused under the new credit facility at a rate between 0.25% to 0.35%, depending on the Company’s Net Leverage Ratio. The new credit facility is collateralized by security interests in substantially all of the Company’s assets and includes customary events of default such as non-payment of principal, non-payment of interest or fees, inaccuracy of representations and warranties, violation of certain covenants, cross default to certain other indebtedness, bankruptcy and insolvency events, material judgments against us, and a change of control. The occurrence of an event of default could result in the acceleration of the obligations under the new credit facility. The new credit facility contains customary representations, warranties, affirmative covenants, such as financial statement reporting requirements, negative covenants, and financial covenants, such as maintenance of certain net leverage ratio requirements. The negative covenants include restrictions that, among other things, restrict the Company’s ability to incur liens and indebtedness, make certain investments, declare dividends, dispose of, transfer or sell assets, make stock repurchases and consummate certain other matters, all subject to certain exceptions. The Company had no amounts outstanding under the new credit facility as of June 30, 2021. The amount available under the credit facility as of June 30, 2021 was $243.7 million, which is the credit limit less letters of credit outstanding of $6.3 million. On June 22, 2020, the Company issued subordinated secured convertible promissory notes ("Convertible Notes") to related parties who are holders of the Company’s Redeemable Convertible Preferred Stock. The Convertible Notes totaled $25.0 million and had a maturity date of June 22, 2023. The principal and accrued interest balance of the Convertible Notes was automatically convertible into common stock upon a Direct Listing with a conversion price equal to the lower of (i) 75% of the volume-weighted average price of the common stock on the first trading day following such listing and (ii) $8.2909.

Convertible Notes with Related

Convertible Notes with Related Parties	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Convertible Notes with Related Parties	Credit FacilityIn April 2021, the Company terminated its existing revolving credit agreement from September 2020 and entered into a new $250.0 million credit facility agreement with a syndicate of banks. The new credit facility has a maturity date of April 30, 2026 and bears interest at a rate based upon the Company’s Net Leverage Ratio. The Company’s Net Leverage Ratio is defined as total debt less total cash and permitted investments outstanding at period end, with a maximum total cash and permitted investments adjustment of $100.0 million, divided by the trailing twelve month of earnings, adjusted for items such as noncash expenses and other nonrecurring transactions. The Company is also obligated to pay other customary fees including a commitment fee on a quarterly basis based on amounts committed but unused under the new credit facility at a rate between 0.25% to 0.35%, depending on the Company’s Net Leverage Ratio. The new credit facility is collateralized by security interests in substantially all of the Company’s assets and includes customary events of default such as non-payment of principal, non-payment of interest or fees, inaccuracy of representations and warranties, violation of certain covenants, cross default to certain other indebtedness, bankruptcy and insolvency events, material judgments against us, and a change of control. The occurrence of an event of default could result in the acceleration of the obligations under the new credit facility. The new credit facility contains customary representations, warranties, affirmative covenants, such as financial statement reporting requirements, negative covenants, and financial covenants, such as maintenance of certain net leverage ratio requirements. The negative covenants include restrictions that, among other things, restrict the Company’s ability to incur liens and indebtedness, make certain investments, declare dividends, dispose of, transfer or sell assets, make stock repurchases and consummate certain other matters, all subject to certain exceptions. The Company had no amounts outstanding under the new credit facility as of June 30, 2021. The amount available under the credit facility as of June 30, 2021 was $243.7 million, which is the credit limit less letters of credit outstanding of $6.3 million. On June 22, 2020, the Company issued subordinated secured convertible promissory notes ("Convertible Notes") to related parties who are holders of the Company’s Redeemable Convertible Preferred Stock. The Convertible Notes totaled $25.0 million and had a maturity date of June 22, 2023. The principal and accrued interest balance of the Convertible Notes was automatically convertible into common stock upon a Direct Listing with a conversion price equal to the lower of (i) 75% of the volume-weighted average price of the common stock on the first trading day following such listing and (ii) $8.2909.

Commitment and Contingencies

Commitment and Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Matters The Company is subject to various legal proceedings and claims that arise in the ordinary course of business. If the Company determines that it is probable that a loss has been incurred and the amount is reasonably estimable, the Company will record a liability. However, if the Company determines that a contingent loss is reasonably possible and the loss or range of loss can be estimated, the Company will disclose the possible loss in the condensed consolidated financial statements. In April 2019, the Company was named as a defendant in a putative class action lawsuit filed by a former employee in the Los Angeles Superior Court alleging that the Company violated the Fair Credit Reporting Act as well as owed certain compensation to employees. In January 2020, the former employee filed a related representative action in the Los Angeles Superior Court under the Private Attorney General Act alleging similar claims regarding compensation owed to employees. In January 2021, the Company filed a motion for summary judgment or, in the alternative, summary adjudication, which was granted in part and denied in part. At the date these condensed consolidated financial statements were issued, it is reasonably possible that a loss may be incurred; however, a loss or range of losses is not currently estimable. Indemnification In the ordinary course of business, the Company may provide indemnification of varying scopes and terms to customers, investors, directors and officers with respect to certain matters, including, but not limited to, losses arising out of the Company’s breach of such agreements, services to be provided by the Company, or from certain claims made by third parties. These indemnification provisions may survive termination of the underlying agreement and the maximum potential amount of future payments the Company could be required to make under these indemnification provisions may not be subject to maximum loss clauses. The maximum potential amount of future payments the Company could be required to make under these indemnification provisions is indeterminable. The Company has never paid a material claim, nor has the Company been sued in connection with these indemnification arrangements. As of June 30, 2021, the Company has not accrued a liability for these indemnification arrangements because the likelihood of incurring a payment obligation, if any, in connection with these indemnification arrangements is neither probable nor reasonably estimable.

Common Stock and Redeemable Con

Common Stock and Redeemable Convertible Preferred Stock	6 Months Ended
	Jun. 30, 2021
Equity and Temporary Equity [Abstract]
Common Stock and Redeemable Convertible Preferred Stock	Common Stock and Redeemable Convertible Preferred Stock Common stock The Company is authorized to issue a total of 1.45 billion shares consisting of 700 million shares of Class A common stock, 700 million shares of Class B common stock, and 50 million shares of preferred stock all with a par value per share of $0.00001. The Class A common stock is entitled to one vote per share and the Class B common stock is entitled to twenty votes per share. The Class A and Class B common stock have the same dividend and liquidation rights. The Class B common stock converts to Class A at any time at the option of the holder. Additionally, each share of Class B common stock will convert automatically into one share of Class A common stock upon any transfer, except for certain transfers described in the restated certificate of incorporation. In January 2021, the Company repurchased 50,000 shares of common stock from a former employee for an aggregate price of $0.5 million The repurchased shares of common stock were retired and recorded as a reduction of Class B common stock and additional paid-in capital. In May 2021, the Company repurchased 100,000 shares of common stock from a former employee for an aggregate price of $2.3 million. The repurchased shares of common stock were retired and recorded as a reduction of Class B common stock and additional paid-in capital. Redeemable Convertible Preferred Stock In April 2021, the Company amended and restated its certificate of incorporation such that the redeemable convertible preferred stock automatically converts into shares of common stock upon the effectiveness of the Direct Listing.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2021
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based Compensation Total stock-based compensation expense is recorded in the Condensed Consolidated Statements of Operations as follows (in thousands): Three Months Ended Six Months Ended 2021 2020 2021 2020 Cost of revenue $ 737 $ 18 $ 753 $ 42 Sales and marketing 12,317 119 12,416 425 Research and development 18,573 712 19,398 1,573 General and administrative 32,739 497 33,025 1,264 Total stock-based compensation $ 64,366 $ 1,346 $ 65,592 $ 3,304 2014 Equity Incentive Plan Under the amended and restated certificate of incorporation, all outstanding options to purchase common stock became options to purchase an equivalent number of shares of Class B common stock and all RSUs became RSUs for an equivalent number of Class B common stock under the 2014 equity incentive plan. 2021 Equity Incentive Plan In April 2021, the Company adopted the 2021 equity incentive plan (the “2021 Plan”), which became effective on May 14, 2021 in connection with the Direct Listing. The 2021 Plan permits the grant of incentive stock options to employees and the grant of non-qualified stock options, restricted stock, restricted stock awards, restricted stock units, stock appreciation rights, performance units, performance shares and stock bonus awards to the Company’s employees, directors, and consultants. Under the 2021 Plan, 10.7 million shares were initially reserved for issuance. The number of shares initially reserved for issuance pursuant to awards under the 2021 Plan will be increased by (i) (a) any reserved shares not issued or subject to outstanding awards granted under the Company’s 2012 and 2014 Equity Incentive Plans (collectively, the “Prior Plans”) that cease to be subject to such awards by forfeiture or otherwise after the effective date, (b) shares issued under the Prior Plans before or after the effective date pursuant to the exercise of stock options that are, after the effective date, forfeited, (c) shares issued under the Prior Plans that are repurchased by the Company at the original purchase price or are otherwise forfeited, and (d) shares that are subject to stock options or other awards under the Prior Plans that are used to pay the exercise price of a stock option or withheld to satisfy the tax withholding obligations related to any award and (ii) and annual increase on January 1st of each year beginning in 2022 through 2031, by the lesser of (a) 5% of the number of shares of all classes of the Company’s common stock issue and outstanding on December 31 immediately prior to the date of increase or (b) such number of shares determined by the Board. No grants have been issued under the 2021 Plan as of June 30, 2021. Stock Options A summary of the Company’s stock option activity under the 2012, 2014, and 2021 equity incentive plans (the “Plans”) is as follows (in thousands except weighted average information): Number of Options Outstanding Weighted Average Exercise Price Per Share Outstanding at December 31, 2020 19,373 $ 2.09 Granted 114 2.00 Exercised (7,132) 1.73 Forfeited/Canceled (125) 3.96 Outstanding at June 30, 2021 12,230 $ 2.28 Exercisable at June 30, 2021 10,844 $ 2.01 As of June 30, 2021, total remaining stock-based compensation expense for unvested stock options is $6.1 million, which is expected to be recognized over a weighted average period of 1.2 years. In the six months ended June 30, 2021, there were also 115,000 options exercised related to an equity grant outside of the Plans. In April 2021, the Company approved amendment of this grant outside of the Plans, and the amendment resulted in the vesting of an additional 50,000 options. The grantee’s remaining 100,000 unvested options were cancelled and a new grant for 32,500 RSUs was concurrently issued under the 2014 equity incentive plan by the Company, which was accounted for as a stock award modification. The incremental stock-based compensation expense recorded in the three and six months ended June 30, 2021 as a result of the modification was not material to the condensed consolidated financial statements. Restricted Stock Units The Company has granted RSUs to certain employees and directors of the Company. The granted RSUs vest upon the satisfaction of both a time-based service condition and a liquidity event requirement. The time-based service condition for these awards is generally satisfied over four years. The liquidity event requirement is satisfied upon the earliest to occur of a qualifying event, defined as a change of control transaction or after a set period of time following the effective date of the Company’s IPO pursuant to an effective registration statement under the Securities Act for the offer and sale of shares by the Company. A direct listing in which the Company did not sell its equity securities would not have satisfied the liquidity event performance condition; however, on April 19, 2021, the Company’s board of directors waived the liquidity event performance condition for the 6.9 million RSUs then outstanding so those that had satisfied the service condition would vest upon the earlier of the first day of trading of the Company’s common stock on the New York Stock Exchange, or March 15, 2022. As the satisfaction of the performance condition was not probable for accounting purposes prior to the waiver, the waiver of the liquidity event performance condition resulted in the remeasurement of the modified awards at fair value on the date of the waiver, which management estimated to be $25.04 per share or approximately $172.6 million. During the three and six months ended June 30, 2021, the Company recorded stock-based compensation expense of $63.4 million related to these RSUs. On April 19, 2021, the Company also granted the CEO an RSU award, which provides for a grant of 1.4 million RSUs (“CEO Performance Award”). The CEO Performance Award consists of five vesting tranches with a vesting schedule based on achieving stock price targets ranging from $67.61 per share to $157.75, per share, which is calculated as the volume-weighted average over a 30-day trading window following the first day the Company becomes a publicly traded company, as well as satisfying certain minimum service requirements of one Tranche Number of RSUs Eligible to Vest Company Stock Price Target Minimum Service Period (in years) 1 279,600 $67.61 1 2 279,600 $82.63 2 3 279,600 $102.66 3 4 279,600 $127.70 4 5 279,600 $157.75 5 The Company estimated the grant date fair value of this award using a model based on multiple stock price paths developed through the use of a Monte Carlo simulation. A Monte Carlo simulation model also was used to estimate a derived service period for each of the five vesting tranches, which is the measure of the expected time to achieve each of the stock price targets. The various assumptions used in the Monte Carlo simulation included an expected dividend yield of zero, expected term of ten years, estimated volatility of 59%, and a risk-free interest rate of 2%. Using these inputs, the weighted average grant date fair value was estimated to be $16.34 per share. The weighted average derived service period of each tranche was estimated to be 4.1 years and ranged from 3.2 to 5.0 years. The Company will recognize aggregate stock-based compensation expense of $22.8 million over the derived service period of each tranche using a graded attribution method. During the three and six months ended June 30, 2021, the Company recorded stock-based compensation expense of $0.6 million related to the CEO Performance Award. A summary of the Company’s RSU activity for the six months ended June 30, 2021 is as follows (in thousands, except weighted average information): Number of Shares Weighted Average Grant Date Fair Value Per Share Unvested at December 31, 2020 5,451 $ 5.75 Granted 3,010 19.85 Vested (2,278) 7.77 Forfeited/Canceled (206) 6.60 Unvested at June 30, 2021 5,977 $ 14.08

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesThe Company computes its provision (benefit) for income taxes by applying the estimated annual effective tax rate to pretax income or loss and adjusts the provision for discrete tax items recorded in the period. For the three and six months ended June 30, 2021, the Company recorded an income tax benefit of $(15.9) million and $(12.7) million, respectively. For the three and six months ended June 30, 2020, the Company recorded income tax expense of $0.2 million and $0.3 million, respectively. The effective tax rates for the three and six months ended June 30, 2021 were 23% and 24%, respectively, and the effective tax rates for the three and six months ended June 30, 2020 were 1% and 3%, respectively. The effective tax rate for the three and six months ended June 30, 2021 differed from the U.S. federal statutory tax rate of 21% primarily due to excess tax benefits relating to the exercise of non-qualified stock options and settlement of RSUs, partially offset by permanent items such as the Company’s Direct Listing costs and Section 162(m) officer compensation limitations. The effective tax rate for the three and six months ended June 30, 2020 differed from the U.S. federal statutory tax rate of 21% primarily due to the valuation allowance maintained against net U.S. federal and state deferred tax assets. During the fourth quarter of 2020, the Company released its full valuation allowance on its U.S. federal and state net deferred tax assets, as it was more likely than not that those deferred tax assets would be realized. The Company has maintained this position for the three and six months ended June 30, 2021.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In August 2021, the Company’s board of directors approved the terms of administering the 2021 Employee Stock Purchase Plan ("ESPP"), and the first offering period of the plan is expected to commence on August 15, 2021. The Company has initially reserved 1.3 million shares of its Class A common stock for issuance and sale under the ESPP. The ESPP will allow eligible employees the option to purchase shares of the Company's Class A common stock at a 15% discount through payroll deductions of their eligible compensation, subject to certain plan limitations. The ESPP provides for six-month offering periods beginning February and August of each fiscal year. On each purchase date, eligible employees purchase the Company’s stock at a price per share equal to 85% of the lesser of (i) the fair market value of the Company’s Class A common stock on the offering date or (ii) the fair market value of the Company’s Class A common stock on the purchase date.

Basis of Presentation, Princi_2

Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Principles of Consolidation	The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information. Accordingly, certain information and disclosures normally included in consolidated financial statements presented in accordance with U.S. GAAP have been condensed or omitted. The condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. The accompanying condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s final prospectus filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended, on May 26, 2021 (the “Prospectus”). The consolidated balance sheet as of December 31, 2020 has been derived from our audited consolidated financial statements. In the opinion of the Company’s management, the accompanying unaudited condensed consolidated financial statements include all adjustments (consisting of normal recurring adjustments) necessary for the fair statement of the condensed consolidated financial statements. There have been no changes in the Company’s accounting policies from those disclosed in its audited consolidated financial statements and the related notes included in the Prospectus.
Use of Estimates	The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Significant estimates include revenue recognition, estimates relating to the measurement of operating lease right-of-use (“ROU”) assets and operating lease liabilities, determination of the fair value of stock-based awards, valuation of common stock in periods prior to becoming a public company, collectability of accounts receivable, impairment of long-lived assets, including goodwill, carrying value and useful lives of property and equipment and internal-use software, the amortization period for deferred commission costs, and income taxes. By their nature, estimates are subject to an inherent degree of uncertainty and actual results could differ from those estimates. The impact of the Coronavirus pandemic (“COVID-19”) continues to evolve. As a result, many of the Company’s estimates and assumptions require increased judgment and carry a higher degree of variability and volatility. As of the date these condensed consolidated financial statements are issued, the Company is not aware of any specific event or circumstance that would require an update to the Company’s estimates or judgments, or change to the carrying value of the Company’s assets or liabilities. However, these estimates and judgments may change as new events occur and additional information is obtained, which may result in changes being recognized in the consolidated financial statements in future periods. Actual results could differ from those estimates and any such differences may have a material impact on the financial statements.
Fair Value Measurements	Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. Accounting standards describe a fair value hierarchy based on the following three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value: - Level 1 — Quoted prices in active markets for identical assets, liabilities, or funds. - Level 2 — Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. - Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The carrying amounts of the Company’s financial instruments, including accounts receivable, accounts payable, and accrued expenses approximate fair value because of their short-term maturities. The fair value of the Company’s convertible notes with related parties as of December 31, 2020 was estimated to be approximately $36.9 million, and was based on the value of shares into which the notes convert. The value of the shares represents a Level 3 input in the fair value hierarchy. The convertible notes with related parties converted into shares of Class B common stock in connection with the Direct Listing in May 2021. Certain assets, including goodwill and intangible assets are also subject to measurement at fair value on a non-recurring basis using Level 3 inputs, but only when they are deemed to be impaired. As of June 30, 2021 and December 31, 2020, no impairments were identified on those assets required to be measured at fair value on a non-recurring basis.
Segments and Geographic Information	The Company operates as a single operating segment. The Company’s Chief Operating Decision Maker (“CODM”), the Chief Executive Officer, regularly reviews financial information presented on a consolidated basis for purposes of assessing financial performance and allocating resources.
Stock-based Compensation for Awards with a Market Condition	In April 2021, the Company granted a RSU award (the “CEO Performance Award”), which included service, market, and performance based vesting conditions. The fair value of the award is determined using a Monte Carlo simulation model. The associated stock-based compensation is recorded over the requisite service period, using a graded attribution method. The requisite service period is the longer of the service period derived from the Monte Carlo simulation model and the explicit service period the CEO is required to remain employed to vest in the award. The market condition is satisfied upon achieving certain stock price targets for a period following the completion of the Company’s Direct Listing. The CEO Performance Award also contains an implied performance-based vesting condition as the CEO’s ability to earn the award is contingent upon the completion of the Direct Listing. Accordingly, no expense was recognized prior to the completion of the Company’s Direct Listing on May 26, 2021, as vesting was not considered probable for accounting purposes until the Direct Listing occurred. Provided that Ian Siegel continues to be the CEO of the Company, stock-based compensation expense is recognized over the requisite service period, regardless of whether the stock price targets are achieved. If the stock price targets are met sooner than the derived service period, the Company will accelerate the recognition of stock-based compensation expense to reflect the cumulative expense associated with the vested shares. The determination of the fair value of stock-based awards with a market condition is inherently uncertain and subjective and involves the application of valuation models and assumptions requiring the use of judgment. If the Company had made different assumptions, its stock-based compensation expense, and its results of operations for the three and six months ended June 30, 2021 and June 30, 2020 may have been significantly different.
Recent Accounting Pronouncements	Accounting Pronouncements Not Yet Adopted As an “emerging growth company,” the Company is allowed by the Jumpstart Our Business Startups Act to delay adoption of new or revised accounting pronouncements applicable to public companies until such pronouncements are made applicable to private companies. The Company has elected to use the adoption dates applicable to private companies. As a result, the Company’s financial statements may not be comparable to the financial statements of issuers who are required to comply with the effective date for new or revised accounting standards that are applicable to public companies. In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which replaces the existing model for measuring the allowance for credit losses for financial assets measured at amortized cost (including accounts receivable) to a model that is based on the expected losses rather than incurred losses. Under the new credit loss model, lifetime expected credit losses on such financial assets are measured and recognized at each reporting date based on historical, current, and forecast information. In November 2018, the FASB issued ASU No. 2018-19, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, and in April 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments – Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. These ASUs provide supplemental guidance and clarification to ASU 2016-13 and must be adopted concurrently with the adoption of ASU 2016-13, cumulatively referred to as “Topic 326.” This guidance is effective for fiscal years beginning after December 15, 2022 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the effects of the adoption of this update on its consolidated financial statements. In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which enhances and simplifies various aspects of income tax accounting guidance. This guidance is effective for fiscal years beginning after December 15, 2021, and interim periods within fiscal years beginning after December 15, 2022. Early adoption is permitted, including adoption in an interim period. An entity that elects to early adopt ASU 2019-12 in an interim period should reflect any adjustments as of the beginning of the annual period that includes that interim period. The Company is currently evaluating the effects of the adoption of this update on its consolidated financial statements. In August 2020, the FASB issued ASU 2020-06, Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, which simplifies the accounting for certain convertible instruments, amends the guidance on derivative scope exceptions for contracts in an entity’s own equity, and modifies the guidance on diluted earnings per share calculations as a result of these changes. This guidance is effective for fiscal years beginning after December 15, 2023 and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the effects of the adoption of this update on its consolidated financial statements. Recently Adopted Accounting Pronouncements
Earnings Per Share	Basic and diluted net income (loss) per share are computed using the two-class method as required when there are participating securities and multiple classes of common stock. Prior to May 14, 2021, when the Company’s Series A and B redeemable convertible preferred stock converted into shares of Class B common stock, the Company’s redeemable convertible preferred stock were participating securities as the holders of the redeemable convertible preferred stock were entitled to participate in dividends with common stock. In periods of net income, net income after deducting the accretion of redeemable convertible preferred stock was attributed to common stockholders and participating securities based on their participation rights. Net losses after deducting the accretion of redeemable convertible preferred stock are not allocated to the participating securities as the participating securities do not have a contractual obligation to share in any losses.

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method	The following table presents the Company’s basic net income (loss) per share (in thousands, except per share amounts): Three Months Ended Six Months Ended 2021 2020 2021 2020 Net income (loss) per share, basic: Net income (loss) $ (52,847) $ 21,323 $ (39,449) $ 10,241 Less: Accretion of redeemable convertible preferred stock (483) (956) (1,480) (1,911) Less: Undistributed earnings attributable to participating securities — (4,745) — (1,943) Net income (loss) attributable to Class A and Class B common stockholders $ (53,330) $ 15,622 $ (40,929) $ 6,387 Weighted average shares of Class A and Class B common stock outstanding 96,726 79,681 87,829 79,552 Net income (loss) per share attributable to Class A and Class B common stockholders, basic $ (0.55) $ 0.20 $ (0.47) $ 0.08
Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method	The following table presents the Company’s diluted net income (loss) per share (in thousands, except per share amounts): Three Months Ended Six Months Ended 2021 2020 2021 2020 Net income (loss) per share, diluted: Numerator: Net income (loss) attributable to Class A and Class B common stockholders $ (53,330) $ 15,622 $ (40,929) $ 6,387 Add: Reallocation of net income attributable to participating securities — 477 — 202 Interest on convertible notes with related parties, net of tax — 11 — — Net income (loss) attributable to Class A and Class B common stockholders, diluted $ (53,330) $ 16,110 $ (40,929) $ 6,589 Denominator: Weighted average shares of Class A and Class B common stock outstanding, basic 96,726 79,681 87,829 79,552 Effect of dilutive securities: Options to purchase common stock — 11,236 — 12,029 Convertible notes with related parties — 373 — — Weighted average shares of Class A and Class B common stock outstanding, diluted 96,726 91,290 87,829 91,581 Net income (loss) per share attributable to Class A and Class B common stockholders, diluted $ (0.55) $ 0.18 $ (0.47) $ 0.07
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following table presents the weighted average number of potentially dilutive common stock equivalents excluded from the computation of diluted net income (loss) per share because their inclusion would have been anti-dilutive (in thousands): Three Months Ended Six Months Ended 2021 2020 2021 2020 Options to purchase common stock 15,521 6,643 17,065 5,499 Restricted stock units 6,078 3,921 5,820 3,550 Redeemable convertible preferred stock, if converted basis 11,436 — 17,784 — Convertible notes with related parties, if converted basis 1,860 — 2,457 187 Unvested early exercise common stock 61 — 31 — Total shares excluded from diluted net income (loss) per share 34,956 10,564 43,157 9,236

Revenue Information (Tables)

Revenue Information (Tables)	6 Months Ended
	Jun. 30, 2021
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table presents the Company’s revenue streams (in thousands): Three Months Ended Six Months Ended 2021 2020 2021 2020 Subscription $ 151,292 $ 74,002 $ 251,796 $ 169,367 Performance-based 31,668 13,653 56,536 31,580 Total revenue $ 182,960 $ 87,655 $ 308,332 $ 200,947

Accrued Expenses (Tables)

Accrued Expenses (Tables)	6 Months Ended
	Jun. 30, 2021
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities	Accrued expenses consist of the following (in thousands): June 30, December 31, 2021 2020 Accrued marketing $ 18,578 $ 6,006 Accrued bonuses 6,626 11,202 Other accrued expenses 10,542 7,311 Accrued partner expenses 7,031 5,554 Accrued 401(k) contributions 1,458 2,414 Accrued commissions 5,301 3,332 Accrued indirect taxes 1,238 600 Accrued refunds and customer liabilities 3,925 2,423 Total accrued expenses $ 54,699 $ 38,842

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2021
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Expensed and Capitalized, Amount	Total stock-based compensation expense is recorded in the Condensed Consolidated Statements of Operations as follows (in thousands): Three Months Ended Six Months Ended 2021 2020 2021 2020 Cost of revenue $ 737 $ 18 $ 753 $ 42 Sales and marketing 12,317 119 12,416 425 Research and development 18,573 712 19,398 1,573 General and administrative 32,739 497 33,025 1,264 Total stock-based compensation $ 64,366 $ 1,346 $ 65,592 $ 3,304
Schedule of Stock Options Roll Forward	A summary of the Company’s stock option activity under the 2012, 2014, and 2021 equity incentive plans (the “Plans”) is as follows (in thousands except weighted average information): Number of Options Outstanding Weighted Average Exercise Price Per Share Outstanding at December 31, 2020 19,373 $ 2.09 Granted 114 2.00 Exercised (7,132) 1.73 Forfeited/Canceled (125) 3.96 Outstanding at June 30, 2021 12,230 $ 2.28 Exercisable at June 30, 2021 10,844 $ 2.01
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity	Tranche Number of RSUs Eligible to Vest Company Stock Price Target Minimum Service Period (in years) 1 279,600 $67.61 1 2 279,600 $82.63 2 3 279,600 $102.66 3 4 279,600 $127.70 4 5 279,600 $157.75 5
Schedule of Nonvested Restricted Stock Units Activity	A summary of the Company’s RSU activity for the six months ended June 30, 2021 is as follows (in thousands, except weighted average information): Number of Shares Weighted Average Grant Date Fair Value Per Share Unvested at December 31, 2020 5,451 $ 5.75 Granted 3,010 19.85 Vested (2,278) 7.77 Forfeited/Canceled (206) 6.60 Unvested at June 30, 2021 5,977 $ 14.08

Description of Business (Detail

Description of Business (Details) - USD ($) shares in Millions, $ in Millions	May 26, 2021	May 14, 2021	Jun. 30, 2021	Jun. 30, 2021	May 25, 2021
Class of Stock [Line Items]
Issuance costs incurred in connection with Direct Listing			$ 31.9	$ 34
Series A Redeemable Convertible Preferred Stock
Class of Stock [Line Items]
Redeemable convertible preferred stock, outstanding (in shares)					2.3
Series B Redeemable Convertible Preferred Stock
Class of Stock [Line Items]
Redeemable convertible preferred stock, outstanding (in shares)					6
Common Class B | Common Stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock to common stock (in shares)	3.1	24.2

Basis of Presentation, Princi_3

Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021segment	Dec. 31, 2020USD ($)
Class of Stock [Line Items]
Number of operating segments | segment	1
Fair Value, Recurring | Fair Value, Inputs, Level 3
Class of Stock [Line Items]
Fair value of convertible notes with related parties | $		$ 36.9

Net Income (Loss) Per Share - S

Net Income (Loss) Per Share - Schedule of Earnings Per Share - Basic (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Net income (loss) per share, basic:
Net income (loss)	$ (52,847)	$ 13,398	$ 21,323	$ (11,082)	$ (39,449)	$ 10,241
Less: Accretion of redeemable convertible preferred stock	(483)		(956)		(1,480)	(1,911)
Less: Undistributed earnings attributable to participating securities	0		(4,745)		0	(1,943)
Net income (loss) attributable to Class A and Class B common stockholders	$ (53,330)		$ 15,622		$ (40,929)	$ 6,387
Weighted-average shares of common stock outstanding (in shares)	96,726		79,681		87,829	79,552
Net income (loss) per share - basic (in dollars per share)	$ (0.55)		$ 0.20		$ (0.47)	$ 0.08

Net Income (Loss) Per Share -_2

Net Income (Loss) Per Share - Schedule of Earnings Per Share - Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net income (loss) attributable to Class A and Class B common stockholders	$ (53,330)	$ 15,622	$ (40,929)	$ 6,387
Reallocation of net income attributable to participating securities	0	477	0	202
Interest on convertible notes with related parties, net of tax		11
Net income (loss) attributable to Class A and Class B common stockholders, diluted	$ (53,330)	$ 16,110	$ (40,929)	$ 6,589
Denominator:
Weighted-average shares of common stock outstanding (in shares)	96,726	79,681	87,829	79,552
Effect of dilutive securities:
Options to purchase common stock (in shares)	0	11,236	0	12,029
Convertible notes with related parties (in shares)	0	373	0	0
Weighted average shares of Class A and Class B common stock outstanding, diluted (in shares)	96,726	91,290	87,829	91,581
Net income (loss) per share attributable to Class A and Class B common stockholders - diluted (in dollars per share)	$ (0.55)	$ 0.18	$ (0.47)	$ 0.07

Net Income (Loss) Per Share -_3

Net Income (Loss) Per Share - Schedule of Antidilutive Options (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares excluded from diluted net income (loss) per share (in shares)	34,956	10,564	43,157	9,236
Options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares excluded from diluted net income (loss) per share (in shares)	15,521	6,643	17,065	5,499
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares excluded from diluted net income (loss) per share (in shares)	6,078	3,921	5,820	3,550
Redeemable convertible preferred stock, if converted basis
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares excluded from diluted net income (loss) per share (in shares)	11,436	0	17,784	0
Convertible notes with related parties, if converted basis
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares excluded from diluted net income (loss) per share (in shares)	1,860	0	2,457	187
Unvested early exercise common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares excluded from diluted net income (loss) per share (in shares)	61	0	31	0

Revenue Information - Narrative

Revenue Information - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2021USD ($)revenueStream	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)revenueStream	Jun. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Revenue from Contract with Customer [Abstract]
Number of revenue streams | revenueStream	2		2
Revenue that was included in deferred revenue balances	$ 15,500,000	$ 14,400,000	$ 11,400,000	$ 13,900,000
Contract assets	0		0		$ 0
Revenue recognized from performance obligations satisfied in previous periods	$ 0	$ 0	$ 0	$ 0

Revenue Information - Schedule

Revenue Information - Schedule of Revenue Streams (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenue	$ 182,960	$ 87,655	$ 308,332	$ 200,947
Subscription
Disaggregation of Revenue [Line Items]
Total revenue	151,292	74,002	251,796	169,367
Performance-based
Disaggregation of Revenue [Line Items]
Total revenue	$ 31,668	$ 13,653	$ 56,536	$ 31,580

Accrued Expenses (Details)

Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Accrued marketing	$ 18,578	$ 6,006
Accrued bonuses	6,626	11,202
Other accrued expenses	10,542	7,311
Accrued partner expenses	7,031	5,554
Accrued 401(k) contributions	1,458	2,414
Accrued commissions	5,301	3,332
Accrued indirect taxes	1,238	600
Accrued refunds and customer liabilities	3,925	2,423
Total accrued expenses	$ 54,699	$ 38,842

Credit Facility (Details)

Credit Facility (Details) - Line of Credit - USD ($)	1 Months Ended
	Apr. 30, 2021	Jun. 30, 2021
Line of Credit Facility [Line Items]
Line of credit facility	$ 250,000,000
Maximum cash and permitted investments adjustment	$ 100,000,000
Line of credit, amount available		$ 243,700,000
Minimum
Line of Credit Facility [Line Items]
Commitment fee (as a percent)	0.25%
Maximum
Line of Credit Facility [Line Items]
Commitment fee (as a percent)	0.35%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term debt outstanding		0
Letter of Credit
Line of Credit Facility [Line Items]
Long-term debt outstanding		$ 6,300,000

Convertible Notes with Relate_2

Convertible Notes with Related Parties (Details) - Convertible Subordinated Debt - Affiliated Entity - USD ($) $ / shares in Units, shares in Millions	May 26, 2021	Jun. 22, 2020
Related Party Transaction [Line Items]
Convertible notes issued		$ 25,000,000
Convertible debt, threshold percentage of stock price trigger (as a percent)		75.00%
Convertible debt, conversion price (in dollars per share)	$ 8.2909	$ 8.2909
Long-term debt outstanding	$ 25,600,000
Common Class B
Related Party Transaction [Line Items]
Convertible debt, shares converted (in shares)	3.1

Commitment and Contingencies (D

Commitment and Contingencies (Details)	Jun. 30, 2021USD ($)
Commitments and Contingencies Disclosure [Abstract]
Accrued liability for indemnification arrangements	$ 0

Common Stock and Redeemable C_2

Common Stock and Redeemable Convertible Preferred Stock (Details) $ / shares in Units, $ in Millions	May 26, 2021shares	May 14, 2021shares	May 31, 2021USD ($)shares	Jan. 31, 2021USD ($)shares	Jun. 30, 2021vote$ / sharesshares	Dec. 31, 2020$ / sharesshares
Class of Stock [Line Items]
Common stock, authorized (in shares)					1,450,000,000
Preferred stock, authorized (in shares)					50,000,000	0
Common stock, par value (in dollars per share) | $ / shares					$ 0.00001
Preferred stock, par value (in dollars per share) | $ / shares					$ 0.00001	$ 0.00001
Common shares repurchased (in shares)			100,000	50,000
Common shares repurchased, amount | $			$ 2.3	$ 0.5
Common Class A
Class of Stock [Line Items]
Common stock, authorized (in shares)					700,000,000	0
Common stock, par value (in dollars per share) | $ / shares					$ 0.00001	$ 0.00001
Number of votes entitled per share | vote					1
Common Class B
Class of Stock [Line Items]
Common stock, authorized (in shares)					700,000,000	137,800,000
Common stock, par value (in dollars per share) | $ / shares					$ 0.00001
Number of votes entitled per share | vote					20
Common Class B | Common Stock
Class of Stock [Line Items]
Conversion of redeemable convertible preferred stock to common stock (in shares)	3,100,000	24,200,000

Stock-Based Compensation - Tota

Stock-Based Compensation - Total Stock Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 64,366	$ 1,346	$ 65,592	$ 3,304
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	737	18	753	42
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	12,317	119	12,416	425
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	18,573	712	19,398	1,573
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 32,739	$ 497	$ 33,025	$ 1,264

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Apr. 19, 2021	Apr. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	May 14, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total remaining stock-based compensation expense for unvested stock options			$ 6,100		$ 6,100
Stock based compensation, weighted average period of recognition					1 year 2 months 12 days
Issuance of common stock upon exercise of options (in shares)					115,000
Options vested during period (in shares)		50,000
Nonvested options cancelled (in shares)		100,000
Total stock-based compensation			$ 64,366	$ 1,346	$ 65,592	$ 3,304
Equity Incentive Plan 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares initially reserved for issuance (in shares)							10,700,000
Shares reserved for issuance as a percent of common stock issued and outstanding (as a percent)							5.00%
Stock granted under 2021 Plan (in shares)					0
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, weighted average period of recognition					1 year 6 months
Restricted stock units granted (in shares)		32,500			3,010,000
Service period					4 years
RSUs outstanding (in shares)	6,900,000		5,977,000		5,977,000			5,451,000
Fair value of RSUs (in dollars per share)	$ 25.04
Value of RSUs	$ 172,600
Total stock-based compensation			$ 63,400		$ 63,400
Weighted average grant date fair value (in dollars per share)			$ 14.08		$ 14.08			$ 5.75
Unrecognized stock based compensation expense			$ 108,200		$ 108,200
Restricted stock units | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation, weighted average period of recognition					3 years 10 months 24 days
Restricted stock units granted (in shares)	1,400,000
Total stock-based compensation			600		$ 600
Trading window (in days)	30 days
Expiration period					10 years
Aggregate stock based compensation expense over derived service period	$ 22,800
Unrecognized stock based compensation expense			$ 22,200		$ 22,200
Restricted stock units | Chief Executive Officer | Monte Carlo Simulation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period					4 years 1 month 6 days
Fair value assumptions, expected dividend yield					0.00%
Fair value assumptions, expected term					10 years
Fair value assumptions, estimated volatility (as a percent)					59.00%
Fair value assumptions, risk-free rate (as a percent)					2.00%
Weighted average grant date fair value (in dollars per share)			$ 16.34		$ 16.34
Restricted stock units | Chief Executive Officer | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period					1 year
RSUs vested in period, amount per share (in dollars per share)	$ 67.61
Restricted stock units | Chief Executive Officer | Minimum | Monte Carlo Simulation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period					3 years 2 months 12 days
Restricted stock units | Chief Executive Officer | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period					5 years
RSUs vested in period, amount per share (in dollars per share)	$ 157.75
Restricted stock units | Chief Executive Officer | Maximum | Monte Carlo Simulation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period					5 years

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Stock Option Activity (Details) - $ / shares	6 Months Ended
	Jun. 30, 2021
Number of Options Outstanding
Exercised (in shares)	(115,000)
Equity Incentive Plans, 2012, 2014, 2021
Number of Options Outstanding
Beginning balance (in shares)	19,373,000
Granted (in shares)	114,000
Exercised (in shares)	(7,132,000)
Forfeited/cancelled (in shares)	(125,000)
Ending balance (in shares)	12,230,000
Exercisable (in shares)	10,844,000
Weighted Average Exercise Price Per Share
Beginning balance, outstanding (in dollars per share)	$ 2.09
Granted (in dollars per share)	2
Exercised (in dollars per share)	1.73
Forfeited/Cancelled (in dollars per share)	3.96
Ending balance, outstanding (in dollars per share)	2.28
Exercisable (in dollars per share)	$ 2.01

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of RSU Information (Details) - Restricted stock units - $ / shares	6 Months Ended
	Jun. 30, 2021	Apr. 19, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs Eligible to Vest (in shares)	5,977,000	6,900,000	5,451,000
Minimum Service Period (in years)	4 years
Tranche 1 | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs Eligible to Vest (in shares)	279,600
Company Stock Price Target (in dollars per share)	$ 67.61
Minimum Service Period (in years)	1 year
Tranche 2 | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs Eligible to Vest (in shares)	279,600
Company Stock Price Target (in dollars per share)	$ 82.63
Minimum Service Period (in years)	2 years
Tranche 3 | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs Eligible to Vest (in shares)	279,600
Company Stock Price Target (in dollars per share)	$ 102.66
Minimum Service Period (in years)	3 years
Tranche 4 | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs Eligible to Vest (in shares)	279,600
Company Stock Price Target (in dollars per share)	$ 127.70
Minimum Service Period (in years)	4 years
Tranche 5 | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs Eligible to Vest (in shares)	279,600
Company Stock Price Target (in dollars per share)	$ 157.75
Minimum Service Period (in years)	5 years

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of RSU Activity (Details) - Restricted stock units - $ / shares	Apr. 19, 2021	Apr. 30, 2021	Jun. 30, 2021
Number of Shares
Beginning balance (in shares)			5,451,000
Granted (in shares)		32,500	3,010,000
Vested (in shares)			(2,278,000)
Forfeited/Canceled (in shares)			(206,000)
Ending balance (in shares)	6,900,000		5,977,000
Weighted Average Grant Date Fair Value Per Share
Beginning balance (in dollars per share)			$ 5.75
Granted (in dollars per share)			19.85
Vested (in dollars per share)			7.77
Forfeited/Canceled (in dollars per share)			6.60
Ending balance (in dollars per share)			$ 14.08

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (15,917)	$ 165	$ (12,672)	$ 332
Effective income tax rate (as a percent)	23.00%	1.00%	24.00%	3.00%

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent Event - Employee Stock	1 Months Ended
	Aug. 31, 2021shares
Subsequent Event [Line Items]
Shares initially reserved for issuance (in shares)	1,300,000
ESPP discount percentage from market price, beginning of purchase period (as a percent)	15.00%
ESPP purchase price of common stock, percent of market price (as a percent)	85.00%