ON24 (ONTF) 10-Q 12 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 04, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Entity Registrant Name	ON24, INC.
Entity Central Index Key	0001110611
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Trading Symbol	ONTF
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		46,650,980
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	DE
Entity File Number	001-39965
Entity Tax Identification Number	94-3292599
Entity Address, Address Line One	50 Beale Street, 8th Floor
Entity Address, City or Town	San Francisco
Entity Address, Postal Zip Code	94105
City Area Code	415
Local Phone Number	369-8000
Entity Address, State or Province	CA

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 351,727	$ 58,243
Marketable investments	44,631	3,000
Accounts receivable, net of allowances and reserves of $2,399 and $2,173 as of June 30, 2021 and December 31, 2020, respectively	38,891	48,617
Deferred contract acquisition costs, current	11,304	10,528
Prepaid expenses and other current assets	11,264	7,079
Total current assets	457,817	127,467
Property and equipment, net	9,775	9,051
Deferred contract acquisition costs, non-current	20,067	18,753
Other long-term assets	902	1,447
Total assets	488,561	156,718
Current liabilities
Accounts payable	2,907	4,730
Accrued liabilities	19,555	17,439
Deferred revenue	93,899	92,240
Long-term debt, current portion	2,362	2,359
Total current liabilities	118,723	116,768
Long-term debt	3,263	25,727
Other long-term liabilities	3,859	4,022
Total liabilities	125,845	146,517
Commitments and contingencies (See Note 7)
Stockholders’ equity (deficit)
Common stock, $0.0001 par value per share; 500,000,000 and 50,000,000 shares authorized as of June 30, 2021 and December 31, 2020, respectively; 46,449,556 and 10,896,137 shares issued and outstanding as of June 30, 2021 and December 31, 2020, respectively	5	1
Additional paid-in capital	539,137	27,512
Accumulated deficit	(176,610)	(171,263)
Accumulated other comprehensive income	184	94
Total stockholders’ equity (deficit)	362,716	(143,656)
Total liabilities, convertible preferred stock and stockholders’ equity (deficit)	$ 488,561	156,718
Convertible Class A-1 and Class A-2 Preferred Stock
Temporary Equity
Convertible preferred stock		83,857
Redeemable Convertible Class B and Class B-1 Preferred Stock
Temporary Equity
Convertible preferred stock		$ 70,000

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accounts receivable, allowances and reserves	$ 2,399	$ 2,173
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	500,000,000	50,000,000
Common stock, shares issued	46,449,556	10,896,137
Common stock, shares outstanding	46,449,556	10,896,137
Convertible Class A-1 and Class A-2 Preferred Stock
Convertible preferred stock, par value	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	0	21,699,945
Convertible preferred stock, shares issued	0	21,683,548
Convertible preferred stock, shares outstanding	0	21,683,548
Convertible preferred stock, liquidation preference	$ 0	$ 102,776
Redeemable Convertible Class B and Class B-1 Preferred Stock
Convertible preferred stock, par value	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	0	5,543,918
Convertible preferred stock, shares issued	0	5,543,918
Convertible preferred stock, shares outstanding	0	5,543,918
Convertible preferred stock, liquidation preference	$ 0	$ 70,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue:
Total revenue	$ 52,118	$ 36,320	$ 102,217	$ 61,066
Cost of revenue:
Total cost of revenue	11,873	7,962	22,567	14,668
Gross profit	40,245	28,358	79,650	46,398
Operating expenses:
Sales and marketing	25,465	12,729	49,390	24,739
Research and development	8,162	4,513	16,108	8,612
General and administrative	9,100	4,206	18,868	7,658
Total operating expenses	42,727	21,448	84,366	41,009
Income (loss) from operations	(2,482)	6,910	(4,716)	5,389
Interest expense	106	193	337	405
Other (income) expense, net	211	(22)	327	249
Income (loss) before provision for (benefit from) income taxes	(2,799)	6,739	(5,380)	4,735
Provision for (benefit from) income taxes	(282)	37	(33)	92
Net income (loss)	(2,517)	6,702	(5,347)	4,643
Cumulative preferred dividends allocated to preferred stockholders		(1,427)	(558)	(2,752)
Net income (loss) attributable to common stockholders	$ (2,517)	$ 5,275	$ (5,905)	$ 1,891
Net income (loss) per share attributable to common stockholders:
Basic	$ (0.05)	$ 0.14	$ (0.15)	$ 0.05
Diluted	$ (0.05)	$ 0.14	$ (0.15)	$ 0.05
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders:
Basic	46,570,195	9,707,995	39,664,436	9,419,113
Diluted	46,570,195	10,315,294	39,664,436	10,013,791
Subscription and Other Platform
Revenue:
Total revenue	$ 44,377	$ 27,096	$ 87,287	$ 47,023
Cost of revenue:
Total cost of revenue	8,179	4,824	15,664	8,980
Professional Services
Revenue:
Total revenue	7,741	9,224	14,930	14,043
Cost of revenue:
Total cost of revenue	$ 3,694	$ 3,138	$ 6,903	$ 5,688

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (2,517)	$ 6,702	$ (5,347)	$ 4,643
Other comprehensive income (loss)
Foreign currency translation adjustment, net of tax	114	(2)	108	54
Unrealized loss on available for sale debt securities, net of tax	(18)		(18)
Total other comprehensive income (loss)	96	(2)	90	54
Total comprehensive income (loss)	$ (2,421)	$ 6,700	$ (5,257)	$ 4,697

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Convertible Preferred Stock	Redeemable Convertible Preferred Stock
Beginning balance at Dec. 31, 2019	$ (171,208)	$ 1	$ 20,809	$ (192,016)	$ (2)
Beginning balance, shares at Dec. 31, 2019						21,683,548	5,543,918
Beginning balance at Dec. 31, 2019						$ 83,857	$ 70,000
Beginning balance, shares at Dec. 31, 2019		8,953,967
Issuance of common stock upon exercise of stock options	2,239		2,239
Issuance of common stock upon exercise of stock options, shares		1,233,511
Stock-based compensation expense	833		833
Other comprehensive income (loss)	54				54
Net income (loss)	4,643			4,643
Ending balance at Jun. 30, 2020	(163,439)	$ 1	23,881	(187,373)	52
Ending balance, shares at Jun. 30, 2020						21,683,548	5,543,918
Ending balance at Jun. 30, 2020						$ 83,857	$ 70,000
Ending balance, shares at Jun. 30, 2020		10,187,478
Beginning balance at Mar. 31, 2020	(172,323)	$ 1	21,697	(194,075)	54
Beginning balance, shares at Mar. 31, 2020						21,683,548	5,543,918
Beginning balance at Mar. 31, 2020						$ 83,857	$ 70,000
Beginning balance, shares at Mar. 31, 2020		9,326,967
Issuance of common stock upon exercise of stock options	1,754		1,754
Issuance of common stock upon exercise of stock options, shares		860,511
Stock-based compensation expense	430		430
Other comprehensive income (loss)	(2)				(2)
Net income (loss)	6,702			6,702
Ending balance at Jun. 30, 2020	(163,439)	$ 1	23,881	(187,373)	52
Ending balance, shares at Jun. 30, 2020						21,683,548	5,543,918
Ending balance at Jun. 30, 2020						$ 83,857	$ 70,000
Ending balance, shares at Jun. 30, 2020		10,187,478
Beginning balance at Dec. 31, 2020	$ (143,656)	$ 1	27,512	(171,263)	94
Beginning balance, shares at Dec. 31, 2020						21,683,548	5,543,918
Beginning balance at Dec. 31, 2020						$ 83,857	$ 70,000
Beginning balance, shares at Dec. 31, 2020	10,896,137	10,896,137
Conversion of convertible preferred stock and redeemable convertible preferred stock to common stock upon initial public offering	$ 153,857	$ 3	153,854
Conversion of convertible preferred stock and redeemable convertible preferred stock to common stock upon initial public offering, shares						(21,683,548)	(5,543,918)
Conversion of convertible preferred stock and redeemable convertible preferred stock to common stock upon initial public offering	(153,857)					$ (83,857)	$ (70,000)
Conversion of convertible preferred stock and redeemable convertible preferred stock to common stock upon initial public offering, shares		27,227,466
Issuance of common stock upon initial public offering, net of underwriting discounts and other offering costs	348,014	$ 1	348,013
Issuance of common stock upon initial public offering, net of underwriting discounts and other offering costs, shares		7,599,928
Issuance of common stock upon exercise of stock options	$ 1,795		1,795
Issuance of common stock upon exercise of stock options, shares	766,072	726,025
Payment for employee tax withheld upon exercising stock options	$ (2,001)		(2,001)
Stock-based compensation expense	9,964		9,964
Other comprehensive income (loss)	90				90
Net income (loss)	(5,347)			(5,347)
Ending balance at Jun. 30, 2021	$ 362,716	$ 5	539,137	(176,610)	184
Ending balance, shares at Jun. 30, 2021	46,449,556	46,449,556
Beginning balance at Mar. 31, 2021	$ 359,783	$ 5	533,783	(174,093)	88
Beginning balance, shares at Mar. 31, 2021		46,321,784
Issuance of common stock upon exercise of stock options	384		384
Issuance of common stock upon exercise of stock options, shares		127,772
Stock-based compensation expense	4,970		4,970
Other comprehensive income (loss)	96				96
Net income (loss)	(2,517)			(2,517)
Ending balance at Jun. 30, 2021	$ 362,716	$ 5	$ 539,137	$ (176,610)	$ 184
Ending balance, shares at Jun. 30, 2021	46,449,556	46,449,556

Condensed Consolidated Statem_4

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)	$ (5,347)	$ 4,643
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	2,294	1,189
Stock-based compensation expense	9,964	833
Amortization of deferred contract acquisition cost	7,502	4,345
Provision for allowance for doubtful accounts and billing reserve	1,209	797
Other	25
Changes in operating assets and liabilities:
Accounts receivable	8,517	(18,560)
Deferred contract acquisition cost	(9,592)	(11,098)
Prepaid expenses and other assets	(7,078)	(783)
Accounts payable	(1,441)	238
Accrued liabilities	3,026	2,154
Deferred revenue	1,659	32,023
Other long-term liabilities	(163)	(421)
Net cash provided by operating activities	10,575	15,360
Cash flows from investing activities:
Purchase of property and equipment	(1,734)	(288)
Purchase of marketable securities	(44,481)	(5,000)
Proceeds from maturity of marketable securities	3,164	5,000
Net cash used in investing activities	(43,051)	(288)
Cash flows from financing activities:
Proceeds from initial public offering, net of underwriting discounts	353,397
Proceeds from issuance of common stock resulting from exercise of stock options	1,795	2,239
Payment of tax withholding obligations related to net share settlements of stock options exercise	(2,001)
Proceeds from long-term debt		12,179
Repayments of long-term debt	(22,478)	(12,084)
Repayment of capital lease obligations	(1,384)	(563)
Payments of offering costs	(3,481)
Net cash provided by financing activities	325,848	1,771
Effect of exchange rate changes on cash, cash equivalents and restricted cash	108	54
Net increase in cash, cash equivalents and restricted cash	293,480	16,897
Cash, cash equivalents and restricted cash, beginning of period	58,345	18,933
Cash, cash equivalents and restricted cash, end of period	351,825	35,830
Supplemental disclosures of cash flow information:
Cash paid for taxes, net of refunds	142	50
Cash paid for interest	403	496
Supplemental disclosures of noncash investing and financing activities:
Equipment acquired under capital leases	1,586	2,520
Equipment purchased funded by liabilities	391	179
Property and equipment purchased not yet paid	132	465
Conversion of convertible preferred stock and redeemable convertible preferred stock to common stock	153,857
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets (in thousands):
Cash and cash equivalents	351,727	35,743
Restricted cash included in other assets, non-current	98	87
Cash, cash equivalents and restricted cash, end of period	$ 351,825	$ 35,830

Description of Business and Sig

Description of Business and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Description of Business and Significant Accounting Policies	Note 1. Description of Business and Significant Accounting Policies Description of Business ON24, Inc. and its subsidiaries (together, ON24 or the Company) provides a leading, cloud-based digital experience platform that enables businesses to convert customer engagement into revenue through interactive webinar experiences, virtual event experiences and multimedia content experiences. The Company’s platform offers a portfolio of interactive, personalized and content-rich digital experience products that creates and captures actionable, real-time data at scale from millions of professionals every month to provide businesses with buying signals and behavioral insights to efficiently convert prospects into customers. The Company was incorporated in the state of Delaware in January 1998 as NewsDirect, Inc. and in December 1998 changed its name to ON24, Inc. The Company is headquartered in San Francisco, California. Initial Public Offering On February 5, 2021, the Company closed its initial public offering (IPO) of 7,599,928 shares of its common stock at a public offering price of $50 per share for net proceeds of approximately $348.0 million, after deducting the underwriting discount of approximately $26.6 million other offering costs of approximately $5.4 million. The shares of common stock sold in the IPO and the net proceeds from the IPO included the full exercise of the underwriters’ option to purchase additional shares. Upon the closing of the IPO, 27,227,466 Basis of Presentation The accompanying condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (U.S. GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC) for interim financial reporting. Certain information and note disclosures included in the Company’s annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s annual report on Form 10-K for the year ended December 31, 2020. In the opinion of management, the condensed consolidated financial statements reflect all adjustments that are normal and recurring in nature and necessary for fair financial statement presentation. All intercompany transactions and balances have been eliminated in consolidation. The results of operations for the three and six months ended June 30, 2021 are not necessarily indicative of the operating results anticipated for the full year. Certain prior period amounts have been reclassified on the condensed consolidated statements of cash flows to conform to the current year's presentation. None of these reclassifications had a material impact to the Company’s condensed consolidated financial statements. 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 items subject to such estimates and assumptions include, but are not limited to, the estimated expected benefit period for deferred contract acquisition costs, the determination of standalone selling price for the Company’s performance obligations, the allowance for doubtful accounts and billing reserve, the useful lives of long-lived assets, the estimated value of common stock prior to the IPO and other assumptions used to measure stock-based compensation, the valuation of deferred income tax assets and uncertain tax positions. Actual results could differ from those estimates. Significant Accounting Policies Effective January 1, 2021, the Company elected to account for forfeited awards as they occur. Prior to 2021, the Company estimated the number of awards expected to be forfeited at the time of grant and revised its estimates in subsequent periods if the actual forfeitures differed from the estimates. The impact of the change was not material. T Deferred Offering Costs Deferred offering costs consist primarily of accounting, legal and other fees incremental and directly related to the Company’s IPO. Upon closing of the IPO on February 5, 2021, the deferred offering costs of $5.4 million were reclassified into stockholders' equity (deficit) and recorded against the proceeds from the offering. Deferred offering costs as of December 31, 2020 was $3.2 million within prepaid expenses and other current assets on the condensed consolidated balance sheets. Stock-Based Compensation Stock-based compensation expense related to stock awards is recognized based on the fair value of the awards granted. The fair value of each option award is estimated on the grant date using the Black-Scholes option pricing model. The Black-Scholes option pricing model requires the input of highly subjective assumptions, including the fair value of the underlying common stock, the risk-free interest rates, the expected term of the option, the expected volatility of the price of the Company’s common stock and the expected dividend yield of the Company’s common stock. The assumptions used to determine the fair value of the option awards represent management’s best estimates. These estimates involve inherent uncertainties and application of management’s judgement. The related stock-based compensation expense is recognized on a straight-line basis over the requisite service period for each separately vesting portion of the award, which is generally four years. Effective January 1, 2021, the Company elected to account for forfeited awards as they occur. Prior to 2021, the Company estimated the number of awards expected to be forfeited at the time of grant and revised its estimates in subsequent periods if the actual forfeitures differed from the estimates. This change in accounting policy did not have a material impact on the Company’s condensed consolidated financial statements. Recently Adopted Accounting Standards In December 2019, the FASB issued ASU No. 2019-12, Income Taxes Topic 740: Simplifying the Accounting for Income Taxes In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract . This new standard requires an entity (customer) in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. Costs for implementation activities in the application development stage can be capitalized depending on the nature of the costs, while costs incurred during the preliminary project and post-implementation stages are expensed as the activities are performed. The costs capitalized are expensed over the term of the hosting arrangement. The amendments in ASU No. 2018-15 also require the entity to present the expense related to the capitalized implementation costs in the same line item in the statement of income as the fees associated with the hosting element (service) of the arrangement and classify payments for capitalized implementation costs in the statement of cash flows in the same manner as payments made for fees associated with the hosting element. ASU No. 2018-15 is effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. For all other entities, ASU No. 2018-15 is effective for annual reporting periods beginning after December 15, 2020, and interim periods within annual periods beginning after December 15, 2021. ASU No. 2018-15 should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company adopt ed ASU No. 2018-15 effective January 1, 2021 using a prospective approach. The adoption of this standard did not have a material impact on its condensed consolidated financial statements.

Revenue

Revenue	6 Months Ended
	Jun. 30, 2021
Revenue From Contract With Customer [Abstract]
Revenue	Note 2. Revenue Disaggregation of Revenue The following table depicts the disaggregation of revenue by geographic region based on the shipping address of customers (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 United States $ 38,336 $ 28,075 $ 75,290 $ 47,505 EMEA 9,362 5,976 18,858 9,826 Other 4,420 2,269 8,069 3,735 Total revenue $ 52,118 $ 36,320 $ 102,217 $ 61,066 The following table summarizes the foreign countries which contributed 10% or more of the total revenue (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 United Kingdom 10% 10 % 11 % 10 % . No single customer accounted for 10% or more of the total revenue during the three and six months ended June 30, 2021 and 2020. Additionally, no single customer accounted for 10% The following table summarizes revenue by digital experience platform and Legacy offering (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Digital experience platform - subscription and other platform $ 44,367 $ 26,397 $ 87,225 $ 45,713 Digital experience platform - professional services 7,741 9,120 14,905 13,522 Legacy - subscription and other platform 10 699 62 1,310 Legacy - professional services — 104 25 521 Total revenue $ 52,118 $ 36,320 $ 102,217 $ 61,066 Contract Balances Accounts receivable : The Company records accounts receivable when the Company has a contractual right to consideration. In some arrangements, a right to consideration for the Company’s performance under the customer contract may occur before invoicing to the customer, resulting in an unbilled receivable. As of June 30, 2021 and December 31, 2020, unbilled receivables were included within accounts receivable, net of allowance for doubtful accounts on the condensed consolidated balance sheets and were not material . Contract assets: The Company records a contract asset when the Company has satisfied a performance obligation but does not yet have an unconditional right to consideration. Contract assets are included in prepaid expenses and other current assets in the condensed consolidated balance sheets and were not material as of June 30, 2021 and December 31, 2020 . Contract liabilities : The Company defers its revenue when the Company has the right to invoice in advance of performance under a customer contract. The current portion of deferred revenue balances is recognized during the following 12-month period and the remaining portion is recorded as noncurrent, which is included in other long-term liabilities on the consolidated balance sheet. The amount of revenue recognized during the three and six months ended June 30, 2021 that was included in deferred revenue at the beginning of the period was $26.0 million and $65.4 million, respectively. Remaining Performance Obligations The terms of the Company’s subscription agreements are primarily annual and, to a lesser extent, multi-year. The Company may bill for the full term in advance or on an annual, quarterly or monthly basis, depending on the terms of the agreement. As of June 30, 2021, the aggregate amount of the transaction price allocated to remaining performance obligations was $155.4 million, which consists of both billed consideration in the amount of $95.1 million and unbilled consideration in the amount of $60.3 million that the Company expects to recognize as revenue. As of June 30, 2021, the Company expects to recognize 80% of its remaining performance obligations as revenue over the subsequent twelve months, and the remainder thereafter. Costs to Obtain a Contract The Company capitalizes sales commissions and associated payroll taxes paid to internal sales personnel and third-party referral fees that are incremental costs resulting from obtaining a contract with a customer. These costs are recorded as deferred contract acquisition costs on the condensed consolidated balance sheets. The Company determines whether costs should be deferred based on its sales compensation plans and if the commissions are incremental and would not have occurred absent the customer contract. Sales commissions paid upon the initial acquisition of a customer contract are amortized over an estimated period of benefit of five years, as the Company specifically anticipates renewals of customer contracts and commissions paid on renewal contracts are not commensurate with commissions paid on new customer contracts. Sales commissions paid upon renewal of customer contracts are amortized over the contractual renewal term. Amortization is recognized on a straight-line basis commensurate with the pattern of revenue recognition. Sales commissions paid related to professional services are amortized over the expected service period. The Company determines the period of benefit for commissions paid for the acquisition of the initial customer contract by taking into consideration the initial estimated customer life and the technological life of its platform and related significant features. Amortization of deferred contract acquisition costs was $3.8 million and $7.5 million for the three and six months ended June 30, 2021, respectively, and $2.4 million and $4.3 million for the three and six

Marketable Securities

Marketable Securities	6 Months Ended
	Jun. 30, 2021
Marketable Securities [Abstract]
Marketable Securities	Note 3. Marketable Securities M arketable securities consisted of the following as of the periods presented (in thousands): June 30, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Marketable Securities U.S. Treasury securities $ 21,078 $ 1 $ (5 ) $ 21,074 Certificates of deposit 945 — — 945 Corporate debt securities 15,281 — (9 ) 15,272 Commercial papers 3,245 — — 3,245 Asset-backed securities 4,100 — (5 ) 4,095 Total marketable securities $ 44,649 $ 1 $ (19 ) $ 44,631 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Marketable Securities Certificates of deposit $ 3,000 $ — $ — $ 3,000 Total marketable securities $ 3,000 $ — $ — $ 3,000 The Company’s marketable securities have been classified as available for sale. All available for sale debt securities are available for use in current operations. Accordingly, they have been classified as current. As of June 30, 2021, the Company had no marketable securities in a continuous loss position for 12 months or more. As of December 31, 2020, the Company had no marketable securities in a loss position. The Company reviews the individual securities that have unrealized losses on a regular basis to evaluate whether any security has experienced other-than-temporary decline in fair value below amortized cost. The Company evaluates, among other factors, whether the Company has the intention to sell any of these marketable securities and whether it is more likely than not that the Company will be required to sell any securities before recovery of the amortized cost basis. Since the Company has the ability to hold its investments until maturity, no decline was deemed to be other-than-temporary. The Company had no realized gains or losses from marketable securities that were reclassified out of accumulated other comprehensive income for the three and six months ended June 30, 2021 and 2020. T he following summarizes the remaining contractual maturities of the Company’s marketable securities as of June 30, 2021 : Fair Value One year or less $ 12,371 Over one year through five years 32,260 Total marketable securities $ 44,631

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 4. Fair Value Measurements The following tables summarizes our financial instruments recorded at fair value on a recurring basis by level within the fair value hierarchy as of the periods presented: June 30, 2021 Level 1 Level 2 Level 3 Total Cash equivalents Money market funds $ 325,053 $ — $ — $ 325,053 Marketable Securities U.S. Treasury securities — 21,074 — 21,074 Certificates of deposit — 945 — 945 Corporate debt securities — 15,272 — 15,272 Commercial papers — 3,245 — 3,245 Asset-backed securities — 4,095 — 4,095 Total cash equivalents and marketable securities $ 325,053 $ 44,631 $ — $ 369,684 December 31, 2020 Level 1 Level 2 Level 3 Total Cash equivalents Money market funds $ 2,027 $ — $ — $ 2,027 Marketable Securities Certificates of deposit 3,000 — — 3,000 Total cash equivalents and marketable securities $ 5,027 $ — $ — $ 5,027 As of June 30, 2021, the Company classified its highly liquid money market funds within level 1 of the fair value hierarchy because they are valued based on quoted market prices in active markets. The Company classified its U.S. Treasury securities, certificates of deposit, commercial paper, corporate debt securities and asset-backed securities within level 2 of the fair value hierarchy because they are valued using inputs other than quoted prices that are directly or indirectly observable in the market, including readily available pricing sources for the identical underlying security, which may not be actively traded. As of December 31, 2020, the Company classified its highly liquid money market funds and certificates of deposit within level 1 of the fair value hierarchy because they are valued based on quoted market prices in active markets.

Balance Sheets Components

Balance Sheets Components	6 Months Ended
	Jun. 30, 2021
Balance Sheet Related Disclosures [Abstract]
Balance Sheets Components	Note 5. Balance Sheets Components Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets consisted of the following as of the periods presented (in thousands): June 30, 2021 December 31, 2020 Deferred offering costs $ — $ 3,220 Prepaid expenses 7,822 2,848 Other receivables 2,802 873 Other 640 138 Prepaid expenses and other current assets $ 11,264 $ 7,079 Property and Equipment, Net Property and equipment, net consisted of the following as of the periods presented (in thousands): June 30, 2021 December 31, 2020 Computer, equipment and software (1) $ 27,152 $ 24,175 Furniture and fixtures 1,092 1,108 Leasehold improvements 3,710 3,708 Property and equipment, gross 31,954 28,991 Less: Accumulated depreciation and amortization (2) (22,179 ) (19,940 ) Property and equipment, net $ 9,775 $ 9,051 (1) Includes assets recorded under capital leases of $7.1 million and $6.9 million as of June 30, 2021 and December 31, 2020, respectively. (2) Includes amount for assets recorded under capital leases of $2.5 million and $2.2 million as of June 30, 2021 and December 31, 2020, respectively. Depreciation and amortization expense was $1.1 million for the three and six months ended June 30, 2021, respectively, $ The following table presents the property and equipment, net of depreciation and amortization, by geographic region (in thousands): June 30, 2021 December 31, 2020 United States $ 9,404 $ 8,698 EMEA 308 308 Other 63 45 Total property and equipment, net $ 9,775 $ 9,051 Accrued Liabilities Accrued liabilities consisted of the following as of the periods presented (in thousands): June 30, 2021 December 31, 2020 Accrued bonus $ 2,717 $ 2,785 Accrued vacation 3,345 2,724 Accrued commissions 1,873 3,149 Accrued ESPP 1,719 — Sales and other tax liabilities 658 1,086 Other 9,243 7,695 Accrued liabilities $ 19,555 $ 17,439 Other Long-term Liabilities Other long-term liabilities consisted of the following as of the periods presented (in thousands): June 30, 2021 December 31, 2020 Deferred rent liabilities $ 2,317 $ 2,543 Deferred revenue 1,193 1,152 Other 349 327 Other long-term liabilities $ 3,859 $ 4,022

Debt

Debt	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Debt	Note 6. Debt Debt consisted of the following as of the periods presented (in thousands): June 30, 2021 December 31, 2020 Revolving line of credit $ — $ 22,350 Equipment loan agreements 701 438 Capital leases 4,924 5,298 Total debt 5,625 28,086 Less: Current portion (2,362 ) (2,359 ) Total long-term debt $ 3,263 $ 25,727 Revolving Line of Credit The Company has a revolving line of credit with a financing institution, which provides the Company the ability to borrow up to $30.0 million with a letter of credit sublimit of $3.9 million and a credit card sublimit of $0.7 million. The revolving line of credit is secured by a security interest on substantially all of the Company’s assets and is subject to certain financial covenants and restrictions, including the requirements of maintaining at all times a minimum of $5.0 million in cash at the institution as well as achieving certain amounts of operating income and deferred revenue for the trailing 12 months as defined by the agreement. In addition, the revolving line of credit agreement restricts the Company from paying dividends without prior approval from the financing institution. Interest on the revolving line of credit was the prime rate, as published by the Wall Street Journal (Prime Rate), plus 0.50% through July 2020 and the Prime Rate plus 0.75% upon the effective date of the amended and restated agreement entered in July 2020 as discussed below. The Prime Rate was 3.25% at June 30, 2021 and 2020. As of June 30, 2021, the Company had an outstanding standby letter of credit of $1.2 million as a guarantee for a leased space. The unused letter of credit sublimit was $2.7 million as of June 30, 2021. In July 2020, the Company entered into an amended and restated agreement to extend the maturity date of its existing revolving line of credit to July 31, 2022 and amend the applicable margin on interest rate from 0.5% to 0.75%. Additionally, the Company is required to pay quarterly in arrears an unused facility fee of 0.25% per annum of the difference between the revolving line of credit and the average principal balance of the obligations during the applicable quarter. Other than these changes, the terms of the revolving line of credit agreement are substantially similar to those of the facility before the amendment. The Company repaid in full the outstanding principal balance of its revolving line of credit of $22.4 million in the first quarter of 2021. Equipment Loan Agreements The Company has entered into various equipment loan agreements that allow it to obtain financing to purchase equipment. Borrowings are secured by the equipment purchased. The equipment loan agreements are repaid over a period up to 36 months beginning from the date of the advance at an interest rate ranging from 5.8% to 10.1%. As of June 30, 2021 and December 31, 2020, the Company $0.4 million, respectively . Capital Leases The Company has entered into various noncancelable capital lease agreements for its equipment with lease periods expiring between 2021 and 2024 . As of June 30, 2021, future payments under the equipment loan agreements and capital lease obligations, are as follows (in thousands): Equipment Loans Capital Leases Total Remainder of 2021 $ 120 $ 1,101 $ 1,221 2022 274 2,302 2,576 2023 236 1,769 2,005 2024 71 71 142 Total payments 701 5,243 5,944 Less: Amount representing interest — 319 319 Total payments, net of interest $ 701 $ 4,924 $ 5,625

Commitment and Contingencies

Commitment and Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitment and Contingencies	Note 7. Commitment and Contingencies Contingencies The Company has agreed to indemnify its directors and executive officers for costs associated with any fees, expenses, judgments, fines, and settlement amounts incurred by any of these persons in any action or proceeding to which any of those persons is, or is threatened to be, made a party by reason of the person’s service as a director or officer, including any action by the Company, arising out of that person’s services as the Company’s director or officer or that person’s services provided to any other company or enterprise at the Company’s request. The Company maintains director and officer insurance coverage that may enable the Company to recover a portion of any future amounts paid. FASB ASC 450-20, Contingencies based on income. When a loss contingency exists, the likelihood of the incurrence of the liability can range from probable to remote. The Company believes it is reasonably possible that a loss will result from the sales and use tax assessments in the range of zero to $1.8 million. The Company has not recorded an accrual as of June 30, 2021 and December 31, 2020. Legal Proceedings In the ordinary course of business, the Company may be subject from time to time to various proceedings, lawsuits, disputes or claims. Although the Company cannot predict with assurance the outcome of any litigation, the Company does not believe there are currently any such actions that, if resolved unfavorably, would have a material impact on its financial condition, results of operations or cash flows.

Convertible Preferred Stock, St

Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan	Note 8. Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan Preferred Stock In connection with the IPO, the Company’s amended and restated certificate of incorporation became effective, which authorized the issuance of 10,000,000 shares of undesignated preferred stock with a par value of $0.0001 per share. The Company’s board of directors is authorized to designate the rights, preferences, privileges and restrictions of the preferred stock from time to time. Convertible Preferred Stock Upon the closing of the IPO in February 2021, all 21,683,548 shares of the Company's outstanding Class A-1 and Class A-2 convertible preferred stock and 5,543,918 shares of Class B and Class B-1 redeemable convertible preferred stock were automatically converted into an aggregate of 27,227,466 Common Stock The amended and restated certificate of incorporation authorized the issuance of 500,000,000 shares of common stock, $0.0001 par value per share. Holders of common stock are entitled to one vote per share. Equity Incentive Plan In February 2021 in connection with the IPO, the Company adopted the 2021 Equity Incentive Plan (2021 Plan), which serves as a successor to and continuation of the 2014 Plan and 2000 Plan, collectively the “Predecessor Plans.” All shares that remained available for issuance under the Predecessor Plans as of the closing of the IPO, or that may expire or be canceled or forfeited following the closing of the IPO, become available for future issuance under the 2021 Plan. Under the 2021 Plan, the Company may grant up to 8,282,313 shares of common stock which includes . In addition, the number of shares reserved for issuance under the 2021 Plan cumulatively increases on January 1, 2022 and on each subsequent January 1 through and including January 1, 2031, by the lesser of (a) 5% of the number of shares of stock issued and outstanding on the immediately preceding December 31, or (b) an amount determined by the Company’s board of directors. The 2021 Plan provides for the grant of stock o The plan administrator determines the term of stock options granted under the 2021 Plan, up to a maximum of Grant Activities Stock Options A summary of stock option activity under the Company’s equity incentive plans and related information is as follows : Options Outstanding Number of Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Life (in years) Aggregate Intrinsic Value (in thousands) Balance as of December 31, 2020 11,947,731 $ 4.85 Granted 481,403 50.12 Exercised (766,072 ) 2.34 37,279 Cancelled and forfeited (202,556 ) 17.86 Balance as of June 30, 2021 11,460,506 $ 6.69 7.0 $ 335,859 Vested and exercisable 6,317,999 $ 2.62 5.3 $ 207,698 Restricted Stock Units (RSUs) A summary of RSU activity under the Company’s equity incentive plans and related information is as follows: RSUs Outstanding Number of Shares Weighted-Average Grant Date Fair Value Unvested balance as of December 31, 2020 — $ — Granted 455,350 37.36 Cancelled and forfeited (26,800 ) 74.50 Unvested balance as of June 30, 2021 428,550 $ 35.03 Restricted Stock Unit with Performance Conditions In June 2014, the Company’s board of directors approved the issuance of 187,500 restricted stock units to an executive officer with a grant date fair value of $0.5 million. No monetary payment was required as a condition to receiving the shares of stock. The award provided that the restricted stock units would vest upon the satisfaction of the following two conditions occurring before June 17, 2021: (i) satisfaction of a service condition of one year and (ii) the occurrence of a liquidity event defined as a change of control or an IPO. The grant date fair value of the awards was not recognized as compensation expense until the performance criteria was probable. Upon the consummation of the Company’s IPO in February 2021, these restricted stock units fully vested and the related stock-based compensation expense of $0.5 million was fully recognized. In accordance with the terms of the grant agreement, these restricted stock units will be settled after the expiration of the lock-up period in the fourth quarter of 2021. Employee Stock Purchase Plan In January 2021, the Company’s board of directors adopted the 2021 Employee Stock Purchase Plan (ESPP), which became effective in connection with the Company’s IPO. A total of shares of common stock were initially reserved for issuance under the ESPP. The number of shares reserved for issuance cumulatively increases automatically on January 1, 2022 and on each subsequent January 1, through and including January 1, 2031, by the lesser of (a) 1% of the number of shares of stock issued and outstanding on the immediately preceding December 31, (b) 1,300,000 shares, or (c) an amount determined by the Company’s board of directors . All eligible employees may participate in the ESPP and may contribute up to 20 % of their earnings (as defined in the ESPP) for the purchase of the Company’s common stock under the ESPP. Unless otherwise determined by the Company’s board of directors, common stock will be purchased for the accounts of employees participating in the ESPP at a price per share equal to the lesser of (1) 85 % of the fair market value of a share of the Company’s common stock on the first date of an offering or (2) 85 % of the fair market value of a share of the Company’s common stock on the date of purchase. Offering periods generally start on the first trading day on or after May 16 and November 16 of each year, except for the first offering period, which commenced on the effective date of the Company’s IPO and will end on November 15, 2021. As of June 30, 2021, no shares of common stock have been purchased under the ESPP. Fair Value Determination The Black-Scholes assumptions used to value the employee options and the ESPP purchase right at the grant dates are as follows: Employee Stock Options Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Expected term 5.92 years - 6.03 years 6.25 years 5.92 years - 6.07 years 6.25 years Expected volatility 54.82% - 54.98% 41.60% 53.82% - 54.98% 41.60% Risk-free interest rate 0.94% - 0.96% 0.42% - 0.46% 0.62% - 0.96% 0.42% - 1.70% Dividend yield — % — % — % — % ESPP Three Months Ended June 30, 2021 Six Months Ended June 30, 2021 Expected term 0.38 years 0.38 years - 0.63 years Expected volatility 60.0 % 60.0% - 61.0% Risk-free interest rate 0.06 % 0.06% Dividend yield — % — % These assumptions and estimates were determined as follows: • Fair Value of Common Stock. Prior to the Company’s IPO, the fair value was determined by the Company’s board of directors, with input from management and valuation reports prepared by third-party valuation specialists. Stock-based compensation for financial reporting purposes is measured based on updated estimates of fair value when appropriate, such as when additional relevant information related to the estimate becomes available in a valuation report issued as of a subsequent date. For valuations after the consummation of the Company’s IPO, the fair value of each share of underlying common stock is based on the closing price of the Company’s common stock as reported on the date of the grant on the New York Stock Exchange. • Risk-Free Interest Rate . The risk-free interest rate for the expected term of the options is based on the U.S. Treasury yield curve in effect at the time of the grant. • Expected Term . The expected term of options represents the period of time that options are expected to be outstanding. The Company’s historical stock option exercise experience does not provide a reasonable basis upon which to estimate an expected term due to a lack of sufficient data. For stock options granted to employees, the Company estimates the expected term by using the simplified method. The simplified method calculates the expected term as the average of the time-to-vesting and the contractual life of the options. For stock options granted to non-employees, the expected term equals the contractual term of the option. With respect to the ESPP, the expected term is the length of purchase period. • Expected Volatility. As the Company has a short trading history for its common stock, the expected volatility is estimated by taking the average historic price volatility for industry peers, consisting of several public companies in its industry that are similar in size, stage of life cycle, or financial leverage, over a period equivalent to the expected term of the awards. • Expected Dividend Yield. The Company has not declared or paid any cash dividends and does not presently plan to pay cash dividends in the foreseeable future. As a result, an expected dividend yield of zero percent was used. Stock-Based Compensation Effective January 1, 2021, the Company elected to account for forfeited awards as they occur. The stock-based compensation expense by line item in the accompanying condensed consolidated statements of operations is summarized as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Cost of revenue Subscription and other platform $ 346 $ 24 $ 583 $ 47 Professional services 77 5 139 9 Total cost of revenue 423 29 722 56 Sales and marketing 1,571 147 3,263 288 Research and development 862 62 1,644 119 General and administrative 2,114 192 4,335 370 Total stock-based compensation expense $ 4,970 $ 430 $ 9,964 $ 833 As of June 30, 2021, unrecognized stock-based compensation expense by award type and their weighted-average recognition periods are as follows (in thousands, except years): Stock Option RSU ESPP Unrecognized stock-based compensation expense $ 58,652 $ 14,566 $ 402 Weighted-average amortization period 3.35 years 3.68 years 0.38 years

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Note 9. Income Taxes The Company’s income tax expense (benefit) was as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Provision for (benefit from) income taxes $ (282 ) $ 37 $ (33 ) $ 92 The Company’s provision for (benefit from) income taxes for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items, if any. The Company updates its estimate of the annual effective tax rate and makes a year-to-date adjustment to the provision quarterly. Benefit from income taxes for the three and six months ended June 30, 2021 increased by $0.3 million and $0.1 million, respectively, compared to the three and six months ended June 30, 2020. The change in benefit from income taxes for each respective period was primarily driven by the tax benefits associated with the exercise of stock options in a foreign jurisdiction . The Company regularly performs an assessment on the likelihood of realizing benefits of its deferred tax assets. As of June 30, 2021, the Company recorded a valuation allowance against its U.S. deferred tax assets based on available evidence. However, if there are favorable changes to actual operating results or to projections of future income, the Company may determine that it is more likely than not that such deferred tax assets may be realizable. Utilization of net operating loss carryforwards, tax credits and other attributes may be subject to future annual limitations due to the ownership change limitations provided by Section 382 of the Internal Revenue Code and similar state provisions.

Net Income (Loss) Per Share Att

Net Income (Loss) Per Share Attributable to Common Stockholders	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Net Income (Loss) Per Share Attributable to Common Stockholders	Note 10. Net Income (Loss) Per Share Attributable to Common Stockholders The following tables sets forth the computation of basic and diluted net loss per share attributable to common stockholders for the periods presented (in thousands, except share and per share data): Three Months Ended June 30, Six Months Ended June 30, Basic net income (loss) per share 2021 2020 2021 2020 Net income (loss) $ (2,517 ) $ 6,702 $ (5,347 ) $ 4,643 Cumulative preferred dividends allocated to preferred stockholders — (1,427 ) (558 ) (2,752 ) Net income (loss) attributable to common stockholders (2,517 ) 5,275 (5,905 ) 1,891 Income available to participating securities — (3,889 ) — (1,406 ) Net income (loss) available to common stockholders $ (2,517 ) $ 1,386 $ (5,905 ) $ 485 Net income (loss) per share of common stock, basic $ (0.05 ) $ 0.14 $ (0.15 ) $ 0.05 Weighted-average common stock outstanding, basic 46,570,195 9,707,995 39,664,436 9,419,113 Three Months Ended June 30, Six Months Ended June 30, Diluted net income (loss) per share 2021 2020 2021 2020 Net income (loss) $ (2,517 ) $ 6,702 $ (5,347 ) $ 4,643 Cumulative preferred dividends allocated to preferred stockholders — (1,427 ) (558 ) (2,752 ) Net income (loss) attributable to common stockholders (2,517 ) 5,275 (5,905 ) 1,891 Reallocation of earnings to participating securities considering potentially dilutive securities — (3,826 ) — (1,383 ) Net income (loss) available to common stockholders $ (2,517 ) $ 1,449 $ (5,905 ) $ 508 Net income (loss) per share of common stock, diluted $ (0.05 ) $ 0.14 $ (0.15 ) $ 0.05 Weighted average common stock outstanding, basic 46,570,195 9,707,995 39,664,436 9,419,113 Weighted average dilutive effect of stock options and restricted stock — 607,299 — 594,678 Weighted-average common stock outstanding, diluted 46,570,195 10,315,294 39,664,436 10,013,791 The following table sets forth the potential shares of common stock that were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented because including them would have been antidilutive: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Convertible preferred stock (on an if-converted basis) — 5,543,918 — 5,543,918 Outstanding stock options 11,460,506 4,990,706 11,460,506 4,640,516 Restricted stock units 428,550 187,500 428,550 187,500 ESPP purchase rights 88,284 — 88,284 — Total antidilutive securities 11,977,340 10,722,124 11,977,340 10,371,934

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Note 11. Related Party Transactions During the three and six months ended June 30, 2021 and 2020, the Company incurred engineering and quality assurance costs from a third-party vendor. The chief executive officer of the third-party vendor is considered an immediate family member of the Company’s chief technology officer. The Company recorded $0.6 million and $1.1 million in the three and $0.4 million and $0.8 million in the three and six months ended June 30, 2020, respectively, in research and development expense relating to this third party vendor were $0.2 million and $0.2 million, respectively, and were included in accounts payable and accrued liabilities on the condensed

Description of Business and S_2

Description of Business and Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation and Significant Accounting Policies	Basis of Presentation The accompanying condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (U.S. GAAP) and applicable rules and regulations of the Securities and Exchange Commission (SEC) for interim financial reporting. Certain information and note disclosures included in the Company’s annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s annual report on Form 10-K for the year ended December 31, 2020. In the opinion of management, the condensed consolidated financial statements reflect all adjustments that are normal and recurring in nature and necessary for fair financial statement presentation. All intercompany transactions and balances have been eliminated in consolidation. The results of operations for the three and six months ended June 30, 2021 are not necessarily indicative of the operating results anticipated for the full year. Significant Accounting Policies Effective January 1, 2021, the Company elected to account for forfeited awards as they occur. Prior to 2021, the Company estimated the number of awards expected to be forfeited at the time of grant and revised its estimates in subsequent periods if the actual forfeitures differed from the estimates. The impact of the change was not material. T
Prior Period Reclassification Adjustment	Certain prior period amounts have been reclassified on the condensed consolidated statements of cash flows to conform to the current year's presentation. None of these reclassifications had a material impact to the Company’s condensed consolidated financial statements.
Use of Estimates	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 items subject to such estimates and assumptions include, but are not limited to, the estimated expected benefit period for deferred contract acquisition costs, the determination of standalone selling price for the Company’s performance obligations, the allowance for doubtful accounts and billing reserve, the useful lives of long-lived assets, the estimated value of common stock prior to the IPO and other assumptions used to measure stock-based compensation, the valuation of deferred income tax assets and uncertain tax positions. Actual results could differ from those estimates.
Deferred Offering Costs	Deferred Offering Costs Deferred offering costs consist primarily of accounting, legal and other fees incremental and directly related to the Company’s IPO. Upon closing of the IPO on February 5, 2021, the deferred offering costs of $5.4 million were reclassified into stockholders' equity (deficit) and recorded against the proceeds from the offering. Deferred offering costs as of December 31, 2020 was $3.2 million within prepaid expenses and other current assets on the condensed consolidated balance sheets.
Stock-Based Compensation	Stock-Based Compensation Stock-based compensation expense related to stock awards is recognized based on the fair value of the awards granted. The fair value of each option award is estimated on the grant date using the Black-Scholes option pricing model. The Black-Scholes option pricing model requires the input of highly subjective assumptions, including the fair value of the underlying common stock, the risk-free interest rates, the expected term of the option, the expected volatility of the price of the Company’s common stock and the expected dividend yield of the Company’s common stock. The assumptions used to determine the fair value of the option awards represent management’s best estimates. These estimates involve inherent uncertainties and application of management’s judgement. The related stock-based compensation expense is recognized on a straight-line basis over the requisite service period for each separately vesting portion of the award, which is generally four years. Effective January 1, 2021, the Company elected to account for forfeited awards as they occur. Prior to 2021, the Company estimated the number of awards expected to be forfeited at the time of grant and revised its estimates in subsequent periods if the actual forfeitures differed from the estimates. This change in accounting policy did not have a material impact on the Company’s condensed consolidated financial statements.
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards In December 2019, the FASB issued ASU No. 2019-12, Income Taxes Topic 740: Simplifying the Accounting for Income Taxes In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract . This new standard requires an entity (customer) in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. Costs for implementation activities in the application development stage can be capitalized depending on the nature of the costs, while costs incurred during the preliminary project and post-implementation stages are expensed as the activities are performed. The costs capitalized are expensed over the term of the hosting arrangement. The amendments in ASU No. 2018-15 also require the entity to present the expense related to the capitalized implementation costs in the same line item in the statement of income as the fees associated with the hosting element (service) of the arrangement and classify payments for capitalized implementation costs in the statement of cash flows in the same manner as payments made for fees associated with the hosting element. ASU No. 2018-15 is effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. For all other entities, ASU No. 2018-15 is effective for annual reporting periods beginning after December 15, 2020, and interim periods within annual periods beginning after December 15, 2021. ASU No. 2018-15 should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company adopt ed ASU No. 2018-15 effective January 1, 2021 using a prospective approach. The adoption of this standard did not have a material impact on its condensed consolidated financial statements.

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2021
Disaggregation Of Revenue [Line Items]
Schedule of Disaggregation of Revenue by Geographic Region	The following table depicts the disaggregation of revenue by geographic region based on the shipping address of customers (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 United States $ 38,336 $ 28,075 $ 75,290 $ 47,505 EMEA 9,362 5,976 18,858 9,826 Other 4,420 2,269 8,069 3,735 Total revenue $ 52,118 $ 36,320 $ 102,217 $ 61,066
Summary of Revenue by Digital Experience Platform and Legacy Offering	The following table summarizes revenue by digital experience platform and Legacy offering (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Digital experience platform - subscription and other platform $ 44,367 $ 26,397 $ 87,225 $ 45,713 Digital experience platform - professional services 7,741 9,120 14,905 13,522 Legacy - subscription and other platform 10 699 62 1,310 Legacy - professional services — 104 25 521 Total revenue $ 52,118 $ 36,320 $ 102,217 $ 61,066
Geographic Concentration Risk | Revenue
Disaggregation Of Revenue [Line Items]
Schedule of Foreign Countries Which Contributed 10% or More of Total Revenue	The following table summarizes the foreign countries which contributed 10% or more of the total revenue (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 United Kingdom 10% 10 % 11 % 10 % .

Marketable Securities (Tables)

Marketable Securities (Tables)	6 Months Ended
	Jun. 30, 2021
Marketable Securities [Abstract]
Summary of Marketable Securities	M arketable securities consisted of the following as of the periods presented (in thousands): June 30, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Marketable Securities U.S. Treasury securities $ 21,078 $ 1 $ (5 ) $ 21,074 Certificates of deposit 945 — — 945 Corporate debt securities 15,281 — (9 ) 15,272 Commercial papers 3,245 — — 3,245 Asset-backed securities 4,100 — (5 ) 4,095 Total marketable securities $ 44,649 $ 1 $ (19 ) $ 44,631 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Marketable Securities Certificates of deposit $ 3,000 $ — $ — $ 3,000 Total marketable securities $ 3,000 $ — $ — $ 3,000
Summary of Remaining Contractual Maturities of Marketable Securities	T he following summarizes the remaining contractual maturities of the Company’s marketable securities as of June 30, 2021 : Fair Value One year or less $ 12,371 Over one year through five years 32,260 Total marketable securities $ 44,631

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Summary of Financial Instruments Recorded at Fair Value on Recurring Basis	The following tables summarizes our financial instruments recorded at fair value on a recurring basis by level within the fair value hierarchy as of the periods presented: June 30, 2021 Level 1 Level 2 Level 3 Total Cash equivalents Money market funds $ 325,053 $ — $ — $ 325,053 Marketable Securities U.S. Treasury securities — 21,074 — 21,074 Certificates of deposit — 945 — 945 Corporate debt securities — 15,272 — 15,272 Commercial papers — 3,245 — 3,245 Asset-backed securities — 4,095 — 4,095 Total cash equivalents and marketable securities $ 325,053 $ 44,631 $ — $ 369,684 December 31, 2020 Level 1 Level 2 Level 3 Total Cash equivalents Money market funds $ 2,027 $ — $ — $ 2,027 Marketable Securities Certificates of deposit 3,000 — — 3,000 Total cash equivalents and marketable securities $ 5,027 $ — $ — $ 5,027

Balance Sheets Components (Tabl

Balance Sheets Components (Tables)	6 Months Ended
	Jun. 30, 2021
Balance Sheet Related Disclosures [Abstract]
Summary of Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets consisted of the following as of the periods presented (in thousands): June 30, 2021 December 31, 2020 Deferred offering costs $ — $ 3,220 Prepaid expenses 7,822 2,848 Other receivables 2,802 873 Other 640 138 Prepaid expenses and other current assets $ 11,264 $ 7,079
Summary of Property and Equipment, Net	Property and equipment, net consisted of the following as of the periods presented (in thousands): June 30, 2021 December 31, 2020 Computer, equipment and software (1) $ 27,152 $ 24,175 Furniture and fixtures 1,092 1,108 Leasehold improvements 3,710 3,708 Property and equipment, gross 31,954 28,991 Less: Accumulated depreciation and amortization (2) (22,179 ) (19,940 ) Property and equipment, net $ 9,775 $ 9,051 (1) Includes assets recorded under capital leases of $7.1 million and $6.9 million as of June 30, 2021 and December 31, 2020, respectively. (2) Includes amount for assets recorded under capital leases of $2.5 million and $2.2 million as of June 30, 2021 and December 31, 2020, respectively.
Schedule of Property and Equipment, Net of Depreciation and Amortization, by Geographic Region	The following table presents the property and equipment, net of depreciation and amortization, by geographic region (in thousands): June 30, 2021 December 31, 2020 United States $ 9,404 $ 8,698 EMEA 308 308 Other 63 45 Total property and equipment, net $ 9,775 $ 9,051
Summary of Accrued Liabilities	Accrued liabilities consisted of the following as of the periods presented (in thousands): June 30, 2021 December 31, 2020 Accrued bonus $ 2,717 $ 2,785 Accrued vacation 3,345 2,724 Accrued commissions 1,873 3,149 Accrued ESPP 1,719 — Sales and other tax liabilities 658 1,086 Other 9,243 7,695 Accrued liabilities $ 19,555 $ 17,439
Summary of Other Long-Term Liabilities	Other long-term liabilities consisted of the following as of the periods presented (in thousands): June 30, 2021 December 31, 2020 Deferred rent liabilities $ 2,317 $ 2,543 Deferred revenue 1,193 1,152 Other 349 327 Other long-term liabilities $ 3,859 $ 4,022

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Summary of Debt	Debt consisted of the following as of the periods presented (in thousands): June 30, 2021 December 31, 2020 Revolving line of credit $ — $ 22,350 Equipment loan agreements 701 438 Capital leases 4,924 5,298 Total debt 5,625 28,086 Less: Current portion (2,362 ) (2,359 ) Total long-term debt $ 3,263 $ 25,727
Schedule of Future Payments Under Equipment Loan Agreements and Capital Lease Obligations	As of June 30, 2021, future payments under the equipment loan agreements and capital lease obligations, are as follows (in thousands): Equipment Loans Capital Leases Total Remainder of 2021 $ 120 $ 1,101 $ 1,221 2022 274 2,302 2,576 2023 236 1,769 2,005 2024 71 71 142 Total payments 701 5,243 5,944 Less: Amount representing interest — 319 319 Total payments, net of interest $ 701 $ 4,924 $ 5,625

Convertible Preferred Stock, _2

Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan - (Tables)	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Summary of Stock Options	A summary of stock option activity under the Company’s equity incentive plans and related information is as follows : Options Outstanding Number of Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Life (in years) Aggregate Intrinsic Value (in thousands) Balance as of December 31, 2020 11,947,731 $ 4.85 Granted 481,403 50.12 Exercised (766,072 ) 2.34 37,279 Cancelled and forfeited (202,556 ) 17.86 Balance as of June 30, 2021 11,460,506 $ 6.69 7.0 $ 335,859 Vested and exercisable 6,317,999 $ 2.62 5.3 $ 207,698
Summary of RSU Activity Under Equity Incentive Plans and Related Information	A summary of RSU activity under the Company’s equity incentive plans and related information is as follows: RSUs Outstanding Number of Shares Weighted-Average Grant Date Fair Value Unvested balance as of December 31, 2020 — $ — Granted 455,350 37.36 Cancelled and forfeited (26,800 ) 74.50 Unvested balance as of June 30, 2021 428,550 $ 35.03
Schedule of Black-Scholes Assumptions Used to Value the Employee Stock Options	Employee Stock Options Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Expected term 5.92 years - 6.03 years 6.25 years 5.92 years - 6.07 years 6.25 years Expected volatility 54.82% - 54.98% 41.60% 53.82% - 54.98% 41.60% Risk-free interest rate 0.94% - 0.96% 0.42% - 0.46% 0.62% - 0.96% 0.42% - 1.70% Dividend yield — % — % — % — %
Schedule of Black-Scholes Assumptions Used to Value the ESPP	ESPP Three Months Ended June 30, 2021 Six Months Ended June 30, 2021 Expected term 0.38 years 0.38 years - 0.63 years Expected volatility 60.0 % 60.0% - 61.0% Risk-free interest rate 0.06 % 0.06% Dividend yield — % — %
Summary of Share-based Compensation Expense by line item in the Condensed Consolidated Statements of Operations	The stock-based compensation expense by line item in the accompanying condensed consolidated statements of operations is summarized as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Cost of revenue Subscription and other platform $ 346 $ 24 $ 583 $ 47 Professional services 77 5 139 9 Total cost of revenue 423 29 722 56 Sales and marketing 1,571 147 3,263 288 Research and development 862 62 1,644 119 General and administrative 2,114 192 4,335 370 Total stock-based compensation expense $ 4,970 $ 430 $ 9,964 $ 833
Summary of Unrecognized Stock-Based Compensation Expenses	As of June 30, 2021, unrecognized stock-based compensation expense by award type and their weighted-average recognition periods are as follows (in thousands, except years): Stock Option RSU ESPP Unrecognized stock-based compensation expense $ 58,652 $ 14,566 $ 402 Weighted-average amortization period 3.35 years 3.68 years 0.38 years

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Schedule of Income Tax Expense (Benefit)	The Company’s income tax expense (benefit) was as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Provision for (benefit from) income taxes $ (282 ) $ 37 $ (33 ) $ 92

Net Income (Loss) Per Share A_2

Net Income (Loss) Per Share Attributable to Common Stockholders (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Schedule of Computation of Basic and Diluted Net Loss Per Share	The following tables sets forth the computation of basic and diluted net loss per share attributable to common stockholders for the periods presented (in thousands, except share and per share data): Three Months Ended June 30, Six Months Ended June 30, Basic net income (loss) per share 2021 2020 2021 2020 Net income (loss) $ (2,517 ) $ 6,702 $ (5,347 ) $ 4,643 Cumulative preferred dividends allocated to preferred stockholders — (1,427 ) (558 ) (2,752 ) Net income (loss) attributable to common stockholders (2,517 ) 5,275 (5,905 ) 1,891 Income available to participating securities — (3,889 ) — (1,406 ) Net income (loss) available to common stockholders $ (2,517 ) $ 1,386 $ (5,905 ) $ 485 Net income (loss) per share of common stock, basic $ (0.05 ) $ 0.14 $ (0.15 ) $ 0.05 Weighted-average common stock outstanding, basic 46,570,195 9,707,995 39,664,436 9,419,113 Three Months Ended June 30, Six Months Ended June 30, Diluted net income (loss) per share 2021 2020 2021 2020 Net income (loss) $ (2,517 ) $ 6,702 $ (5,347 ) $ 4,643 Cumulative preferred dividends allocated to preferred stockholders — (1,427 ) (558 ) (2,752 ) Net income (loss) attributable to common stockholders (2,517 ) 5,275 (5,905 ) 1,891 Reallocation of earnings to participating securities considering potentially dilutive securities — (3,826 ) — (1,383 ) Net income (loss) available to common stockholders $ (2,517 ) $ 1,449 $ (5,905 ) $ 508 Net income (loss) per share of common stock, diluted $ (0.05 ) $ 0.14 $ (0.15 ) $ 0.05 Weighted average common stock outstanding, basic 46,570,195 9,707,995 39,664,436 9,419,113 Weighted average dilutive effect of stock options and restricted stock — 607,299 — 594,678 Weighted-average common stock outstanding, diluted 46,570,195 10,315,294 39,664,436 10,013,791
Schedule of Potential Shares of Common Stock Excluded from Computation of Diluted Net Loss Per Share	The following table sets forth the potential shares of common stock that were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented because including them would have been antidilutive: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Convertible preferred stock (on an if-converted basis) — 5,543,918 — 5,543,918 Outstanding stock options 11,460,506 4,990,706 11,460,506 4,640,516 Restricted stock units 428,550 187,500 428,550 187,500 ESPP purchase rights 88,284 — 88,284 — Total antidilutive securities 11,977,340 10,722,124 11,977,340 10,371,934

Description of Business and S_3

Description of Business and Significant Accounting Policies - Additional Information (Details) $ / shares in Units, $ in Thousands	Feb. 05, 2021USD ($)$ / sharesshares	Jun. 30, 2021USD ($)shares	Dec. 31, 2020USD ($)
Description of Business and Significant Accounting Policies [Line Items]
Net proceeds		$ 353,397
Underwriting discounts		$ 3,481
Deferred offering costs within prepaid expenses and other current asset/ reclassified into stockholders' equity (deficit)			$ 3,220
Requisite service period		4 years
Prepaid Expenses and Other Current Assets
Description of Business and Significant Accounting Policies [Line Items]
Deferred offering costs within prepaid expenses and other current asset/ reclassified into stockholders' equity (deficit)			$ 3,200
IPO
Description of Business and Significant Accounting Policies [Line Items]
Conversion of convertible preferred stock to common stock upon closing of initial public offering (in shares) | shares	27,227,466
Common Stock
Description of Business and Significant Accounting Policies [Line Items]
Shares issued | shares		7,599,928
Conversion of convertible preferred stock to common stock upon closing of initial public offering (in shares) | shares		27,227,466
Common Stock | IPO
Description of Business and Significant Accounting Policies [Line Items]
Shares issued | shares	7,599,928
Public offering price per share | $ / shares	$ 50
Net proceeds	$ 348,000
Underwriting discounts	26,600
Other offering costs	$ 5,400
Conversion of convertible preferred stock to common stock upon closing of initial public offering (in shares) | shares	27,227,466
Conversion of convertible preferred stock to common stock, ratio	1
Additional Paid-in Capital
Description of Business and Significant Accounting Policies [Line Items]
Deferred offering costs within prepaid expenses and other current asset/ reclassified into stockholders' equity (deficit)	$ 5,400

Revenue - Schedule of Disaggreg

Revenue - Schedule of Disaggregation of Revenue by Geographic Region (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	$ 52,118	$ 36,320	$ 102,217	$ 61,066
United States
Disaggregation Of Revenue [Line Items]
Total revenue	38,336	28,075	75,290	47,505
EMEA
Disaggregation Of Revenue [Line Items]
Total revenue	9,362	5,976	18,858	9,826
Other
Disaggregation Of Revenue [Line Items]
Total revenue	$ 4,420	$ 2,269	$ 8,069	$ 3,735

Revenue - Additional Informatio

Revenue - Additional Information (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021USD ($)Customer	Jun. 30, 2020USD ($)Customer	Jun. 30, 2021USD ($)Customer	Jun. 30, 2020USD ($)Customer	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Revenue recognized related to deferred revenue	$ 26,000,000		$ 65,400,000
Capitalized contract cost, amortization period	5 years		5 years
Amortization of deferred contract acquisition cost			$ 7,502,000	$ 4,345,000
Impairment losses of deferred contract acquisition costs	$ 0	$ 0	0	0
Sales and Marketing Expense
Disaggregation Of Revenue [Line Items]
Amortization of deferred contract acquisition cost	$ 3,800,000	$ 2,400,000	$ 7,500,000	$ 4,300,000
Geographic Concentration Risk | Revenue | Non-US
Disaggregation Of Revenue [Line Items]
Percentage of concentration risk		10.00%		10.00%
Customer Concentration Risk | Revenue
Disaggregation Of Revenue [Line Items]
Percentage of concentration risk	10.00%	10.00%	10.00%	10.00%
Number of single customer representing more than ten percent threshold | Customer	0	0	0	0
Credit Concentration Risk | Accounts Receivable
Disaggregation Of Revenue [Line Items]
Percentage of concentration risk			10.00%		10.00%
Number of single customer representing more than ten percent threshold | Customer	0		0

Revenue - Foreign Countries Whi

Revenue - Foreign Countries Which Contributed 10% or more of Total Revenue (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Geographic Concentration Risk | Revenue | United Kingdom
Disaggregation Of Revenue [Line Items]
Percentage of concentration risk	10.00%	10.00%	11.00%	10.00%

Revenue - Summary of Revenue by

Revenue - Summary of Revenue by Digital Experience Platform and Legacy Offering (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	$ 52,118	$ 36,320	$ 102,217	$ 61,066
Digital Experience Platform - Subscription and Other Platform
Disaggregation Of Revenue [Line Items]
Total revenue	44,367	26,397	87,225	45,713
Digital Experience Platform Professional Services
Disaggregation Of Revenue [Line Items]
Total revenue	7,741	9,120	14,905	13,522
Legacy - Subscription and Other Platform
Disaggregation Of Revenue [Line Items]
Total revenue	$ 10	699	62	1,310
Legacy - Professional Services
Disaggregation Of Revenue [Line Items]
Total revenue		$ 104	$ 25	$ 521

Revenue - Additional Informat_2

Revenue - Additional Information (Details1) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-07-01 $ in Millions	Jun. 30, 2021USD ($)
Disaggregation Of Revenue [Line Items]
Remaining performance obligation	$ 155.4
Remaining performance obligation percentage	80.00%
Revenue remaining performance obligation, expected timing of satisfaction period	12 months
Billed Consideration
Disaggregation Of Revenue [Line Items]
Remaining performance obligation	$ 95.1
Unbilled Consideration
Disaggregation Of Revenue [Line Items]
Remaining performance obligation	$ 60.3

Marketable Securities - Summary

Marketable Securities - Summary of Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Marketable Securities [Line Items]
Total marketable securities, Amortized Cost	$ 44,649	$ 3,000
Total marketable securities, Gross Unrealized Gains	1
Total marketable securities, Gross Unrealized Losses	(19)
Total marketable securities, Fair Value	44,631	3,000
US Treasury Securities
Marketable Securities [Line Items]
Total marketable securities, Amortized Cost	21,078
Total marketable securities, Gross Unrealized Gains	1
Total marketable securities, Gross Unrealized Losses	(5)
Total marketable securities, Fair Value	21,074
Certificates of Deposit
Marketable Securities [Line Items]
Total marketable securities, Amortized Cost	945	3,000
Total marketable securities, Fair Value	945	$ 3,000
Corporate Debt Securities
Marketable Securities [Line Items]
Total marketable securities, Amortized Cost	15,281
Total marketable securities, Gross Unrealized Losses	(9)
Total marketable securities, Fair Value	15,272
Commercial Papers
Marketable Securities [Line Items]
Total marketable securities, Amortized Cost	3,245
Total marketable securities, Fair Value	3,245
Asset-backed Securities
Marketable Securities [Line Items]
Total marketable securities, Amortized Cost	4,100
Total marketable securities, Gross Unrealized Losses	(5)
Total marketable securities, Fair Value	$ 4,095

Marketable Securities - Additio

Marketable Securities - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Marketable Securities (Available For Sale) [Line Items]
Marketable securities in a continuous loss position for 12 months or more	$ 0		$ 0		$ 0
Reclassification out of Accumulated Other Comprehensive Income (Loss)
Marketable Securities (Available For Sale) [Line Items]
Realized gains (losses) from marketable securities	$ 0	$ 0	$ 0	$ 0

Marketable Securities - Summa_2

Marketable Securities - Summary of Remaining Contractual Maturities of Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Marketable Securities (Available For Sale) Maturities [Abstract]
One year or less	$ 12,371
Over one year through five years	32,260
Total marketable securities	$ 44,631	$ 3,000

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Financial Instruments Recorded at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	$ 44,631	$ 3,000
U.S. Treasury Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	21,074
Certificates of Deposit
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	945	3,000
Corporate Debt Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	15,272
Commercial Papers
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	3,245
Asset-backed Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	4,095
Fair Value Measurements Recurring
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total cash equivalents and marketable securities	369,684	5,027
Fair Value Measurements Recurring | Level 1
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total cash equivalents and marketable securities	325,053	5,027
Fair Value Measurements Recurring | Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total cash equivalents and marketable securities	44,631
Fair Value Measurements Recurring | Money Market Funds
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Money market funds, fair value	325,053	2,027
Fair Value Measurements Recurring | Money Market Funds | Level 1
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Money market funds, fair value	325,053	2,027
Fair Value Measurements Recurring | U.S. Treasury Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	21,074
Fair Value Measurements Recurring | U.S. Treasury Securities | Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	21,074
Fair Value Measurements Recurring | Certificates of Deposit
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	945	3,000
Fair Value Measurements Recurring | Certificates of Deposit | Level 1
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities		$ 3,000
Fair Value Measurements Recurring | Certificates of Deposit | Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	945
Fair Value Measurements Recurring | Corporate Debt Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	15,272
Fair Value Measurements Recurring | Corporate Debt Securities | Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	15,272
Fair Value Measurements Recurring | Commercial Papers
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	3,245
Fair Value Measurements Recurring | Commercial Papers | Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	3,245
Fair Value Measurements Recurring | Asset-backed Securities
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	4,095
Fair Value Measurements Recurring | Asset-backed Securities | Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Marketable Securities	$ 4,095

Balance Sheets Components - Sum

Balance Sheets Components - Summary of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Prepaid Expense And Other Assets Current [Abstract]
Deferred offering costs		$ 3,220
Prepaid expenses	$ 7,822	2,848
Other receivables	2,802	873
Other	640	138
Prepaid expenses and other current assets	$ 11,264	$ 7,079

Balance Sheets Components - S_2

Balance Sheets Components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 31,954	$ 28,991
Less: Accumulated depreciation and amortization	(22,179)	(19,940)
Property and equipment, net	9,775	9,051
Computer, Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment, gross	27,152	24,175
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,092	1,108
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 3,710	$ 3,708

Balance Sheets Components - S_3

Balance Sheets Components - Summary of Property and Equipment, Net (Parenthetical) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 31,954	$ 28,991
Accumulated depreciation and amortization	22,179	19,940
Computer Equipment and Software Recorded Under Capital Lease
Property Plant And Equipment [Line Items]
Property and equipment, gross	7,100	6,900
Assets Recorded Under Capital Lease
Property Plant And Equipment [Line Items]
Accumulated depreciation and amortization	$ 2,500	$ 2,200

Balance Sheets Components - Add

Balance Sheets Components - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Property Plant And Equipment [Abstract]
Depreciation and amortization	$ 1,100	$ 700	$ 2,294	$ 1,189

Balance Sheets Components - Sch

Balance Sheets Components - Schedule of Property and Equipment, Net of Depreciation and Amortization, by Geographic Region (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Total property and equipment, net	$ 9,775	$ 9,051
United States
Property Plant And Equipment [Line Items]
Total property and equipment, net	9,404	8,698
EMEA
Property Plant And Equipment [Line Items]
Total property and equipment, net	308	308
Other
Property Plant And Equipment [Line Items]
Total property and equipment, net	$ 63	$ 45

Balance Sheets Components - S_4

Balance Sheets Components - Summary of Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accrued Liabilities Current [Abstract]
Accrued bonus	$ 2,717	$ 2,785
Accrued vacation	3,345	2,724
Accrued commissions	1,873	3,149
Accrued ESPP	1,719
Sales and other tax liabilities	658	1,086
Other	9,243	7,695
Accrued liabilities	$ 19,555	$ 17,439

Balance Sheets Components - S_5

Balance Sheets Components - Summary of Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Other Liabilities Noncurrent [Abstract]
Deferred rent liabilities	$ 2,317	$ 2,543
Deferred revenue	1,193	1,152
Other	349	327
Other long-term liabilities	$ 3,859	$ 4,022

Debt - Summary of Debt (Details

Debt - Summary of Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total debt	$ 5,625	$ 28,086
Less: Current portion	(2,362)	(2,359)
Total long-term debt	3,263	25,727
Equipment Loan Agreements
Debt Instrument [Line Items]
Total debt	701	438
Capital Leases
Debt Instrument [Line Items]
Total debt	$ 4,924	5,298
Revolving Line of Credit
Debt Instrument [Line Items]
Total debt		$ 22,350

Debt - Additional Information (

Debt - Additional Information (Details) - USD ($)	Jul. 30, 2020	Jul. 31, 2020	Mar. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Repayments of long-term debt				$ 22,478,000	$ 12,084,000
Total debt outstanding				5,625,000		$ 28,086,000
Revolving Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 30,000,000
Deferred revenue trailing period				12 months
Margin on interest rate	0.50%	0.75%
Cash to be maintained per agreement				$ 5,000,000
Line of credit maturity date		Jul. 31, 2022
Percentage of unused facility fee to be paid quarterly		0.25%
Repayments of long-term debt			$ 22,400,000
Total debt outstanding						22,350,000
Revolving Line of Credit | Prime Rate
Debt Instrument [Line Items]
Margin on interest rate	0.50%	0.75%
Debt instrument, interest rate				3.25%	3.25%
Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 3,900,000
Letter of Credit | Property Lease Guarantee
Debt Instrument [Line Items]
Letters of credit outstanding, amount				1,200,000
Credit Card Sublimit
Debt Instrument [Line Items]
Maximum borrowing capacity				700,000
Unused Letter of Credit Sublimit | Financial Standby Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				2,700,000
Equipment Loan Agreements
Debt Instrument [Line Items]
Total debt outstanding				$ 701,000		$ 438,000
Minimum
Debt Instrument [Line Items]
Lease expiration period				2021
Minimum | Equipment Loan Agreements
Debt Instrument [Line Items]
Debt instrument, interest rate				5.80%
Maximum
Debt Instrument [Line Items]
Lease expiration period				2024
Maximum | Equipment Loan Agreements
Debt Instrument [Line Items]
Debt instrument, interest rate				10.10%
Repayment period				36 months

Debt - Future Payments Under Eq

Debt - Future Payments Under Equipment Loan Agreements and Capital Lease Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Remainder of 2021	$ 1,221
2022	2,576
2023	2,005
2024	142
Total payments	5,944
Less: Amount representing interest	319
Total payments, net of interest	5,625	$ 28,086
Equipment Loans
Debt Instrument [Line Items]
Equipment Loans, remainder of 2021	120
Equipment Loans, 2022	274
Equipment Loans, 2023	236
Equipment Loans, 2024	71
Equipment Loans, Total payments	701
Equipment Loans, Total payments, net of interest	701
Capital Leases
Debt Instrument [Line Items]
Capital leases, remainder of 2021	1,101
Capital leases, 2022	2,302
Capital leases, 2023	1,769
Capital leases, 2024	71
Capital leases, Total payments	5,243
Capital leases, Less: Amount representing interest	319
Capital leases, Total payments, net of interest	$ 4,924

Commitment and Contingencies -

Commitment and Contingencies - Additional Information (Details) - Sales and Use Tax Assessments - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Loss contingency, range of possible loss, portion not accrued	$ 0	$ 0
Minimum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	0
Maximum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	$ 1,800,000

Convertible Preferred Stock, _3

Convertible Preferred Stock, Stockholders' Equity (Deficit) and Equity Incentive Plan - Additional Information (Detail)	Feb. 05, 2021Vote$ / sharesshares	Feb. 02, 2021USD ($)shares	Jan. 31, 2021shares	Jun. 30, 2014USD ($)shares	Jun. 30, 2021USD ($)$ / sharesshares	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)$ / sharesshares	Jun. 30, 2020USD ($)	Dec. 31, 2020$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares authorized					500,000,000		500,000,000		50,000,000
Common stock, par value | $ / shares	$ 0.0001				$ 0.0001		$ 0.0001		$ 0.0001
Number of votes per share | Vote	1
Requisite service period							4 years
Stock-based compensation expense | $					$ 4,970,000	$ 430,000	$ 9,964,000	$ 833,000
Declared cash dividends | $ / shares							$ 0
Cash dividends payment | $ / shares							$ 0
Restricted Stock Unit
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, Number of Shares							455,350
Restricted Stock Unit | Executive Officer | Share-based Payment Arrangement, Employee
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, Number of Shares				187,500
Grant date fair value | $				$ 500,000
Payment to receive shares of stock | $				$ 0
Requisite service period				1 year
Number of shares vested		187,500
Stock-based compensation expense | $		$ 500,000
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend yield					0.00%	0.00%	0.00%	0.00%
2021 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock shares granted	8,282,313
Number of shares available for future issuance (in shares)	6,400,000
Percent of outstanding stock from Jan 1, 2022 to Jan 1, 2031, maximum	5.00%
2021 Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Term of stock options granted	10 years
2014 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Numbers of additional shares authorized from Jan 1, 2022 to Jan 1, 2031 under the plan	1,882,313
IPO
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Convertible preferred stock converted into shares of common stock	27,227,466
Redeemable preferred stock convertible to common stock conversion ratio	1
Employee Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend yield					0.00%		0.00%
Employee Stock | 2021 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Numbers of additional shares authorized from Jan 1, 2022 to Jan 1, 2031 under the plan			1,300,000
Percent of outstanding stock from Jan 1, 2022 to Jan 1, 2031, maximum			1.00%
Undesignated Preferred Stock | IPO
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Undesignated preferred stock shares authorized (in shares)	10,000,000
Undesignated referred stock par value (in dollars per share) | $ / shares | $ / shares	$ 0.0001
Convertible Class A-1 and Class A-2 Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Convertible preferred stock, shares outstanding					0		0		21,683,548
Convertible Class A-1 and Class A-2 Preferred Stock | IPO
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Convertible preferred stock, shares outstanding	21,683,548
Redeemable Convertible Class B and Class B-1 Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Convertible preferred stock, shares outstanding					0		0		5,543,918
Redeemable Convertible Class B and Class B-1 Preferred Stock | IPO
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Convertible preferred stock, shares outstanding	5,543,918
Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares authorized	500,000,000
Common Stock | Employee Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of employees earnings contribution for purchase of common stock under ESPP			20.00%
Purchase of common stock under ESPP							0
Common Stock | Employee Stock | First Date of ESPP Offering
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of purchase price of common stock to fair market value of common stock on offering or purchase date			85.00%
Common Stock | Employee Stock | Date of Purchase of ESPP Offering
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of purchase price of common stock to fair market value of common stock on offering or purchase date			85.00%
Common Stock | Employee Stock | 2021 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future issuance (in shares)			1,300,000

Convertible Preferred Stock, _4

Convertible Preferred Stock, Stockholders' Equity (Deficit) and Equity Incentive Plan - Summary of Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Beginning balance, Number of Shares	11,947,731
Number of Shares, Granted	481,403
Number of Shares, Exercised	(766,072)
Number of shares, Cancelled and forfeited	(202,556)
Ending balance, Number of Shares	11,460,506
Vested and exercisable, Number of Shares	6,317,999
Beginning balance, Weighted Average Exercise Price	$ 4.85
Weighted Average Exercise Price, Granted	50.12
Weighted Average Exercise Price, Exercised	2.34
Weighted Average Exercise Price, Cancelled and forfeited	17.86
Ending Balance, Weighted Average Exercise Price	6.69
Vested and exercisable, Weighted Average Exercise Price	$ 2.62
Ending balance, Weighted Average Remaining Contractual Life	7 years
Vested and exercisable, Weighted Average Remaining Contractual Life	5 years 3 months 18 days
Aggregate Intrinsic Value, Exercised	$ 37,279
Balance as of June 30, 2021	335,859
Vested and exercisable	$ 207,698

Convertible Preferred Stock, _5

Convertible Preferred Stock, Stockholders' Equity (Deficit) and Equity Incentive Plan - Summary of RSU Activity Under Equity Incentive Plans and Related Information (Details) - Restricted Stock Unit	6 Months Ended
	Jun. 30, 2021$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, Number of Shares | shares	455,350
Cancelled and forfeited, Number of Shares | shares	(26,800)
Unvested balance, Number of Shares | shares	428,550
Granted, Weighted-Average Grant Date Fair Value | $ / shares	$ 37.36
Cancelled and forfeited, Weighted Average Grant Date Fair Value | $ / shares	74.50
Unvested balance, Weighted-Average Grant Date Fair Value | $ / shares	$ 35.03

Convertible Preferred Stock, _6

Convertible Preferred Stock, Stockholders' Equity (Deficit) and Equity Incentive Plan - Schedule of Black-Scholes Assumptions Used to Value the Employee Stock Options (Detail) - Employee Stock Option	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term		6 years 3 months		6 years 3 months
Expected volatility, Minimum	54.82%		53.82%
Expected volatility, Maximum	54.98%		54.98%
Expected volatility		41.60%		41.60%
Risk-free interest rate, Minimum	0.94%	0.42%	0.62%	0.42%
Risk-free interest rate, Maximum	0.96%	0.46%	0.96%	1.70%
Dividend yield	0.00%	0.00%	0.00%	0.00%
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term	5 years 11 months 1 day		5 years 11 months 1 day
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term	6 years 10 days		6 years 25 days

Convertible Preferred Stock, _7

Convertible Preferred Stock, Stockholders' Equity (Deficit) and Equity Incentive Plan - Schedule of Black-Scholes Assumptions Used to Value the ESPP (Detail) - ESPP	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Class Of Stock [Line Items]
Expected term	4 months 17 days
Expected volatility	60.00%
Risk-free interest rate	0.06%	0.06%
Dividend yield	0.00%	0.00%
Minimum
Class Of Stock [Line Items]
Expected term		4 months 17 days
Expected volatility		60.00%
Maximum
Class Of Stock [Line Items]
Expected term		7 months 17 days
Expected volatility		61.00%

Convertible Preferred Stock, _8

Convertible Preferred Stock, Stockholders' Equity (Deficit) and Equity Incentive Plan - Summary of Share-based Compensation Expense by line item in the Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Class Of Stock [Line Items]
Stock-based compensation expense	$ 4,970	$ 430	$ 9,964	$ 833
Cost of Revenue
Class Of Stock [Line Items]
Stock-based compensation expense	423	29	722	56
Cost of Revenue | Subscription and Other Platform
Class Of Stock [Line Items]
Stock-based compensation expense	346	24	583	47
Cost of Revenue | Professional Services
Class Of Stock [Line Items]
Stock-based compensation expense	77	5	139	9
Sales and Marketing
Class Of Stock [Line Items]
Stock-based compensation expense	1,571	147	3,263	288
Research and Development
Class Of Stock [Line Items]
Stock-based compensation expense	862	62	1,644	119
General and Administrative
Class Of Stock [Line Items]
Stock-based compensation expense	$ 2,114	$ 192	$ 4,335	$ 370

Convertible Preferred Stock, _9

Convertible Preferred Stock, Stockholders' Equity (Deficit) and Equity Incentive Plan - Summary of Unrecognized Stock-based Compensation Expense (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)
Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized stock-based compensation expense	$ 58,652
Weighted-average amortization period	3 years 4 months 6 days
Restricted Stock Unit
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized stock-based compensation expense	$ 14,566
Weighted-average amortization period	3 years 8 months 4 days
ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized stock-based compensation expense	$ 402
Weighted-average amortization period	4 months 17 days

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income Tax Expense (Benefit) (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]
Provision for (benefit from) income taxes	$ (282)	$ 37	$ (33)	$ 92

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Increase in benefit from income taxes	$ (0.3)	$ (0.1)

Net Income (Loss) Per Share A_3

Net Income (Loss) Per Share Attributable to Common Stockholders - Schedule of Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Basic net income (loss) per share
Net income (loss)	$ (2,517)	$ 6,702	$ (5,347)	$ 4,643
Cumulative preferred dividends allocated to preferred stockholders		(1,427)	(558)	(2,752)
Net income (loss) attributable to common stockholders	(2,517)	5,275	(5,905)	1,891
Income available to participating securities		(3,889)		(1,406)
Net income (loss) available to common stockholders	$ (2,517)	$ 1,386	$ (5,905)	$ 485
Net income (loss) per share of common stock, basic	$ (0.05)	$ 0.14	$ (0.15)	$ 0.05
Weighted-average common stock outstanding, basic	46,570,195	9,707,995	39,664,436	9,419,113
Diluted net income (loss) per share
Net income (loss)	$ (2,517)	$ 6,702	$ (5,347)	$ 4,643
Cumulative preferred dividends allocated to preferred stockholders		(1,427)	(558)	(2,752)
Net income (loss) attributable to common stockholders	(2,517)	5,275	(5,905)	1,891
Reallocation of earnings to participating securities considering potentially dilutive securities		(3,826)		(1,383)
Net income (loss) available to common stockholders	$ (2,517)	$ 1,449	$ (5,905)	$ 508
Net income (loss) per share of common stock, diluted	$ (0.05)	$ 0.14	$ (0.15)	$ 0.05
Weighted-average common stock outstanding, basic	46,570,195	9,707,995	39,664,436	9,419,113
Weighted average dilutive effect of stock options and restricted stock		607,299		594,678
Weighted-average common stock outstanding, diluted	46,570,195	10,315,294	39,664,436	10,013,791

Net Income (Loss) Per Share A_4

Net Income (Loss) Per Share Attributable to Common Stockholders - Schedule of Potential Shares of Common Stock Excluded from Computation of Diluted Net Loss Per Share (Details) - shares	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 antidilutive securities	11,977,340	10,722,124	11,977,340	10,371,934
Convertible Preferred Stock (On An If-converted Basis)
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total antidilutive securities		5,543,918		5,543,918
Stock Option
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total antidilutive securities	11,460,506	4,990,706	11,460,506	4,640,516
Restricted Stock Unit
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total antidilutive securities	428,550	187,500	428,550	187,500
ESPP
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total antidilutive securities	88,284		88,284

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details) - Chief Executive Officer of Third-party Vendor - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Accounts Payable and Accrued Liabilities
Related Party Transaction [Line Items]
Related party transactions, amounts owed	$ 0.2		$ 0.2		$ 0.2
Research and Development
Related Party Transaction [Line Items]
Engineering and quality assurance costs	$ 0.6	$ 0.4	$ 1.1	$ 0.8