Coursera (COUR) 10-K 3 Mar 22 2021 FY Annual report Financial data

Cover

Cover - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2021	Feb. 24, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
ICFR Auditor Attestation Flag	false
Document Period End Date	Dec. 31, 2021
Document Fiscal Year Focus	2021
Entity File Number	001-40275
Entity Registrant Name	COURSERA, INC.
Entity Tax Identification Number	45-3560292
Entity Address, Address Line One	381 E. Evelyn Ave.
Entity Address, City or Town	Mountain View
Entity Incorporation, State or Country Code	DE
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94041
City Area Code	650
Local Phone Number	963-9884
Title of 12(b) Security	Common Stock, $0.00001 par value
Trading Symbol	COUR
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Auditor Name	DELOITTE & TOUCHE LLP
Auditor Location	San Jose, California
Auditor Firm ID	34
Entity Common Stock, Shares Outstanding		143,301,257
Entity Public Float			$ 4
Entity Central Index Key	0001651562
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Documents Incorporated by Reference	Portions of the registrant's definitive Proxy Statement relating to the 2022 Annual Meeting of Stockholders are incorporated herein by references in Part III of this Annual Report on Form 10-K to the extent stated herein. Such Proxy Statement will be filed with the Securities and Exchange Commission within 120 days of the registrant's fiscal year ended December 31, 2021.

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 580,658	$ 79,878
Marketable securities	241,117	205,402
Accounts receivable, net of allowance for doubtful accounts of $48 and $105 as of December 31, 2020 and 2021, respectively	34,396	40,721
Deferred costs	19,666	14,077
Prepaid expenses and other current assets	16,494	14,993
Total current assets	892,331	355,071
Property, equipment and software, net	24,725	18,644
Operating Lease, Right-of-Use Asset	16,321	21,622
Intangible assets, net	10,091	10,570
Restricted cash	2,061	2,548
Other assets	13,381	9,169
Total assets	958,910	417,624
Current liabilities:
Educator partners payable	49,206	39,005
Other accounts payable and accrued expenses	23,257	12,897
Accrued compensation and benefits	18,353	12,997
Operating lease liabilities, current	8,031	7,926
Deferred revenue, current	94,637	76,080
Other current liabilities	7,639	4,739
Total current liabilities	201,123	153,644
Operating lease liabilities, non-current	11,864	18,305
Other liabilities	559	644
Deferred revenue, non-current	3,851	4,562
Total liabilities	217,397	177,155
Commitments and contingencies (Note 11)
Redeemable convertible preferred stock:
$0.00001 par value- 76,420,805 and zero shares authorized as of December 31, 2020 and 2021, respectively; 75,305,400 and zero shares issued and outstanding as of December 31, 2020 and 2021, respectively; and aggregate liquidation preference, $464,036 and zero as of December 31, 2020 and 2021, respectively	0	462,293
Stockholders' equity (deficit):
Preferred stock, $0.00001 par value- zero and 10,000,000 shares authorized as of December 31, 2020 and 2021, respectively; zero shares issued and outstanding as of December 31, 2020 and 2021	0	0
Common stock, $0.00001 par value-162,000,000 and 300,000,000 shares authorized as of December 31, 2020 and 2021, respectively; 40,301,290 and 141,906,041 shares issued and outstanding as of December 31, 2020 and 2021, respectively	1	0
Additional paid-in capital	1,235,231	126,408
Treasury stock-at cost 2,747,938 shares as of December 31, 2020 and 2021	(4,701)	(4,701)
Accumulated other comprehensive income (loss)	252	20
Accumulated deficit	(488,766)	(343,551)
Total stockholders' equity (deficit)	741,513	(221,824)
Total liabilities, redeemable convertible preferred stock, and stockholders' equity (deficit)	$ 958,910	$ 417,624

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 48	$ 105
Temporary equity, par value (in dollars per share)	$ 0.00001	$ 0.00001
Temporary equity, shares authorized (in shares)	76,420,805	0
Temporary equity, shares issued (in shares)	75,305,400	0
Temporary equity, shares outstanding (in shares)	75,305,400	0
Temporary equity, liquidation preference	$ 464,036	$ 0
Preferred stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Preferred stock, shares authorized (in shares)	0	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Common stock, shares authorized (in shares)	162,000,000	300,000,000
Common stock, shares issued (in shares)	40,301,290	141,906,041
Issue of fully-vested shares of common stock	187,305
Common stock, shares outstanding (in shares)	40,301,290	141,906,041
Treasury stock, shares	2,747,938	2,747,938

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue	$ 415,287	$ 293,511	$ 184,411
Cost of revenue	165,818	138,846	89,589
Gross profit	249,469	154,665	94,822
Operating expenses:
Research and development	135,410	76,784	56,364
Sales and marketing	179,337	107,249	57,042
General and administrative	77,785	37,215	29,810
Total operating expenses	392,532	221,248	143,216
Loss from operations	(143,063)	(66,583)	(48,394)
Interest income	320	1,175	3,282
Interest expense	0	(12)	(625)
Other expense, net	(346)	(120)	(264)
Loss before income taxes	(143,089)	(65,300)	(46,001)
Income tax expense	2,126	1,515	718
Net loss	$ (145,215)	$ (66,815)	$ (46,719)
Net loss per share attributable to common stockholders—basic and diluted (in dollars per share)	$ (1.28)	$ (1.80)	$ (1.45)
Weighted average shares used in computing net loss per share attributable to common stockholders—basic and diluted (in shares)	113,587,523	37,207,492	32,276,258

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (145,215)	$ (66,815)	$ (46,719)
Change in unrealized gain (loss) on marketable securities, net of tax	(272)	(54)	88
Comprehensive loss	$ (145,487)	$ (66,869)	$ (46,631)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Redeemable Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Dec. 31, 2018		$ 227,861
Beginning balance (in shares) at Dec. 31, 2018		58,864,178
Beginning balance at Dec. 31, 2018	$ (177,735)			$ 56,997	$ (4,701)	$ (14)	$ (230,017)
Beginning balance (in shares) at Dec. 31, 2018			29,464,090
Issuance Of Series E Redeemable Convertible Preferred Stock		$ 105,530
Issuance Of Series E Redeemable Convertible PreferredStock (in Shares)		8,794,164
Issuance Costs Of Series E Redeemable Convertible PreferredStock		$ (710)
Issuance of common stock in connection with settlement liability	7,622			7,622
Issuance of common stock in connection with settlement liability (in shares)			1,346,610
Issuance of common stock upon exercise of options	8,293			8,293
Issuance of common stock upon exercise of options (in shares)			4,211,484
Issuance of common stock in connection with asset acquisition (in shares)			610,556
Issuance of common stock in connection with asset acquisition	3,846			3,846
Issuance of restricted stock awards (in shares)			50,000
Vesting of early exercise stock options	927			927
Issuance of common stock in connection with content asset	0
Stock-based compensation expense	16,679			16,679
Change in unrealized loss on marketable securities	88					88
Net loss	(46,719)						(46,719)
Ending balance at Dec. 31, 2019		$ 332,681
Ending balance (in shares) at Dec. 31, 2019		67,658,342
Ending balance at Dec. 31, 2019	(186,999)			94,364	(4,701)	74	(276,736)
Ending balance (in shares) at Dec. 31, 2019			35,682,740
Issuance of Series F redeemable convertible preferred stock		$ 130,000
Issuance of Series F redeemable convertible preferred stock (in shares)		7,647,058
Issuance costs of Series F redeemable convertible preferred stock		$ (388)
Issuance of common stock in connection with settlement liability	0
Issuance of common stock upon exercise of options	10,081			10,081
Issuance of common stock upon exercise of options (in shares)			4,204,065
Issuance of restricted stock awards			$ 36,250
Issuance of common stock upon exercise of warrants	38			38
Issuance of common stock upon exercise of warrants (in shares)			190,930
Vesting of early exercise stock options	196			196
Issuance of common stock in connection with content asset	3,956			3,956
Issuance of common stock in connection with content asset (in shares)			187,305
Stock-based compensation expense	17,773			17,773
Change in unrealized loss on marketable securities	(54)					(54)
Net loss	(66,815)						(66,815)
Ending balance at Dec. 31, 2020	$ 462,293	$ 462,293
Ending balance (in shares) at Dec. 31, 2020	75,305,400	75,305,400
Ending balance at Dec. 31, 2020	$ (221,824)			126,408	(4,701)	20	(343,551)
Ending balance (in shares) at Dec. 31, 2020	40,301,290		40,301,290
Conversion of redeemable convertible preferred stock to common stock upon initial public offering		$ (462,293)
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)		(75,305,400)
Conversion of redeemable convertible preferred stock to common stock upon initial public offering	$ 462,293		$ 1	462,292
Conversion of redeemable convertible preferred stock to common stock upon initial public offering (in shares)			75,305,400
Issuance of common stock upon initial public offering, net of offering costs (in shares)			17,024,276
Issuance of common stock upon initial public offering, net of offering costs	518,869			518,869
Issuance of common stock in connection with settlement liability	0
Issuance of common stock upon exercise of options	32,287			32,287
Issuance of common stock upon exercise of options (in shares)			8,731,889
Vesting of restricted stock units (in shares)			502,135
Tax withholding on vesting of restricted stock units	7,172			7,172
Tax withholding on vesting of restricted stock units (in shares)			(191,719)
Issuance of restricted stock awards (in shares)			4,722
Issuance of common stock related to employee stock purchase plan (in shares)			228,048
Issuance of common stock related to employee stock purchase plan	6,397			6,397
Vesting of early exercise stock options	77			77
Issuance of common stock in connection with content asset	0
Stock-based compensation expense	96,073			96,073
Change in unrealized loss on marketable securities	(272)					(272)
Net loss	(145,215)						(145,215)
Ending balance at Dec. 31, 2021	$ 0
Ending balance (in shares) at Dec. 31, 2021	0	0
Ending balance at Dec. 31, 2021	$ 741,513		$ 1	$ 1,235,231	$ (4,701)	$ (252)	$ (488,766)
Ending balance (in shares) at Dec. 31, 2021	141,906,041		141,906,041

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net loss	$ (145,215)	$ (66,815)	$ (46,719)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	14,757	9,585	5,282
Stock-based compensation	91,183	16,807	16,317
Amortization or accretion of marketable securities	501	(1)	(1,121)
Other	(448)	86	38
Changes in operating assets and liabilities:
Accounts receivable, net	5,863	(24,138)	(6,155)
Prepaid expenses and other assets	(5,697)	(18,254)	(6,622)
Operating lease right-of-use assets	5,301	5,165	0
Accounts payable and accrued expenses	16,322	25,652	6,620
Accrued compensation and other liabilities	7,670	3,718	(815)
Operating lease liabilities	(6,336)	(5,831)	0
Deferred revenue	17,845	39,035	11,841
Net cash provided by operating activities	1,746	(14,991)	(21,334)
Cash flows from investing activities:
Purchases of marketable securities	(241,758)	(218,458)	(166,926)
Proceeds from maturities of marketable securities	204,981	129,934	115,317
Asset acquisition	0	0	(3,345)
Purchases of property, equipment, and software	(1,554)	(3,099)	(4,410)
Capitalized internal-use software costs	(12,090)	(8,819)	(5,522)
Purchase of investment in pricate company	0	(1,000)	0
Net cash (used in) provided by investing activities	(51,609)	(101,442)	(64,886)
Cash flows from financing activities:
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs	0	129,613	104,820
Proceeds from exercise of stock options and warrants	31,766	10,118	8,293
Proceeds from employee stock purchase plan	6,397	0	0
Proceeds from exercise of unvested options, net of repurchases	0	84	499
Repayment of debt associated with asset acquisition			(231)
Payment of holdback consideration related to asset acquisition	0	(769)	0
Proceeds from initial public offering, net of offering cost	525,284	0	0
Payment of deferred offering costs	(6,119)	(32)	0
Payment of tax withholding on vesting of restricted stock units	(7,172)	0	0
Net cash provided by financing activities	550,156	139,014	113,381
Net increase in cash, cash equivalents, and restricted cash	500,293	22,581	27,161
Cash, cash equivalents, and restricted cash—Beginning of period	82,426	59,845	32,684
Cash, cash equivalents, and restricted cash—End of period	582,719	82,426	59,845
Reconciliation of cash, cash equivalents, and restricted cash:
Cash and cash equivalents	580,658	79,878	55,986
Restricted cash	2,061	2,548	3,090
Restricted cash in prepaid expenses and other current assets	0	0	769
Total cash, cash equivalents, and restricted cash	582,719	82,426	59,845
Supplemental disclosures of cash flow information:
Cash paid for interest	0	550	197
Cash paid for income taxes	2,837	1,155	523
Supplemental disclosures of noncash investing and financing activities:
Vesting of early exercised stock options	77	196	927
Stock-based compensation capitalized as internal-use software costs	4,890	966	362
Issuance of common stock in connection with settlement liability	0	0	7,622
Issuance of common stock in connection with asset acquisition	0	0	3,846
Issuance of common stock in connection with content asset	0	3,956	0
Unpaid Proceeds From Exercise of Stock Options	521	0	0
Unpaid purchases of content assets	577	0	0
Unpaid deferred offering costs	295	1,297	0
Content Asset
Cash flows from investing activities:
Purchases of content assets	$ (1,188)	$ 0	$ 0

Organization and Description of

Organization and Description of Business	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	1. ORGANIZATION AND DESCRIPTION OF BUSINESS Description of Business Coursera, Inc., a Delaware corporation (the “Company”), is an online learning platform that connects learners, educators, and institutions with the goal of providing world-class educational content that is affordable, accessible, and relevant. The Company combines content, data, and technology into a platform that is customizable and extensible to both individual learners and institutions. The Company partners with leading university and industry partners (“educator partners”) to bring quality higher education to a broad range of individuals, businesses, organizations, and governments. The Company also sells directly to institutions, including employers, colleges and universities, and governments, to enable their employees, students, and citizens to gain critical skills aligned to the job markets of today and tomorrow. The Company’s corporate headquarters are located in Mountain View, California. Initial Public Offering On April 5, 2021, the Company completed its initial public offering ("IPO") of common stock, in which it sold 14,664,776 shares. The shares were sold at a price to the public of $ 33.00 per share for net proceeds of $ 452,482 , after deducting underwriting discounts and commissions of $ 31,456 . Upon completion of the IPO, $ 6,449 of deferred offering costs were reclassified into additional paid-in capital as a reduction of the net proceeds received from the IPO. Upon the closing of the IPO, all outstanding shares of redeemable convertible preferred stock automatically converted into 75,305,400 shares of common stock on a one -for-one basis. On April 19, 2021, the underwriters exercised in full the right to purchase 2,359,500 additional shares of common stock from the Company, resulting in additional net proceeds of $ 72,802 after deducting underwriting discounts and commissions of $ 5,061 .

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	2. BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation —The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Principles of Consolidation —The consolidated financial statements include the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Segment Information —The Company defines its segments as those operations the chief operating decision maker (“CODM”), determined to be the Chief Executive Officer of the Company, regularly reviews to allocate resources and assess performance. For the years ended December 31, 2019, 2020 and 2021 , the Company operated under three segments: Consumer, Enterprise, and Degrees. The Company continually monitors and reviews its segment reporting structure in accordance with Accounting Standards Codification (“ASC”) Topic 280, Segment Reporting , to determine whether any changes have occurred that would impact its reportable segments. For further information on the Company’s segment reporting, see Note 14 “Segment and Geographic Information.” Use of Estimates —The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities and related disclosures at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. On an ongoing basis, the Company evaluates its estimates, including those related to fair value of common stock and stock-based awards; period of benefit for capitalized commissions; internal-use software costs; useful lives of long-lived assets; the carrying value of operating lease right-of-use assets; valuation of intangible assets and income tax expense, including the valuation of deferred tax assets and liabilities, among others. The World Health Organization declared in March 2020 that the outbreak of the coronavirus disease (“COVID-19") constitutes a pandemic. Since early 2020, the world has been, and continues to be impacted by COVID-19 and its variants. The COVID-19 pandemic has caused general business disruption worldwide beginning in January 2020. The global impact of COVID-19 continues to rapidly evolve, and the Company will continue to actively monitor the situation, including progress made through vaccinations, and the effects on its business and operations. The Company does not yet know the full extent of potential impacts on its business or operations or on the global economy as a whole, particularly if the COVID-19 pandemic continues and persists for an extended period of time. Given the uncertainty, the Company cannot reasonably estimate the impact on its future results of operations, cash flows, or financial condition. As of the date of issuance of the consolidated financial statements, the Company is not aware of any specific event or circumstance that would require it to update its estimates, judgments, or the carrying value of its assets or liabilities. These estimates may change as new events occur and additional information is obtained and are recognized in the consolidated statements as soon as they become known. Actual results could differ from those estimates, and any such differences may be material to the Company’s consolidated financial statements. Summary of Significant Accounting Policies Cash and Cash Equivalents —The Company considers all highly liquid investments with an original maturity at the date of purchase of three months or less to be cash equivalents. Marketable Securities —Marketable securities consist of corporate debt, commercial paper securities, and U.S. government Treasury bills, with an original maturity greater than three months at the date of purchase and are classified as available-for-sale securities. As the Company views these securities as available to support current operations, it has classified all available-for-sale securities as current assets. Available-for-sale securities are initially recorded at cost and periodically adjusted to fair value with unrealized gains and losses reported as a component of accumulated other comprehensive income (loss) in stockholders’ equity (deficit), while realized gains and losses are reported within other income (expense), net as a component of net loss. An impairment charge is recorded in the consolidated statements of operations for declines in fair value below the cost of an individual investment that are deemed to be other-than-temporary. The Company did not identify any marketable securities as other-than-temporarily impaired during the years ended December 31, 2019, 2020 and 2021 . Restricted Cash —As of December 31, 2020 and 2021 , the Company had letters of credit of $ 2,548 and $ 2,061 , respectively, related to its corporate headquarters’ operating lease agreement. Accounts Receivable —Accounts receivable includes billed and unbilled receivable, net of allowances for doubtful accounts. An allowance for doubtful accounts is established based on the Company’s assessment of the collectibility of accounts. Management regularly reviews the adequacy of the allowance for doubtful accounts by considering the age of each outstanding invoice; each customer’s expected ability to pay; and the collection history with each customer, when applicable, to determine whether a specific allowance is appropriate. Accounts receivable deemed uncollectible are charged against the allowance for doubtful accounts when identified. The allowance for doubtful accounts and related activities were not material for the years ended December 31, 2019, 2020 and 2021 . Property, Equipment and Software —Property, equipment and software are stated at cost, less accumulated depreciation and amortization. Depreciation is recorded using the straight-line method over the estimated useful lives of the assets, generally two to five years . Leasehold improvements are amortized over the shorter of the estimated useful lives of the improvements or the remaining lease term. Deferred Offering Costs —Deferred offering costs consist primarily of direct and incremental legal, accounting, and other fees related to the Company’s IPO. Prior to the IPO, all deferred offering costs were capitalized in prepaids expenses and other current assets on the consolidated balance sheets. Upon completion of the IPO, $ 6,449 of the deferred offering costs were reclassified into stockholder's equity as a reduction of the IPO proceeds. Leases —The Company determines if an arrangement is a lease and the classification of that lease, if applicable, at inception based on: (1) whether the contract involves the use of a distinct identified asset, (2) whether the Company obtains the right to substantially all the economic benefits from the use of the asset throughout the period, and (3) whether the Company has a right to direct the use of the asset. For leases that commenced before the Company's adoption date of Accounting Standards Update No. 2016-02, Leases, (“ASC 842”), the Company elected the practical expedients to carryforward its historical lease classification, its assessment on whether a contract was or contains a lease, and its initial direct costs. The Company also elected to not separate lease and non-lease components and to not recognize operating lease right-of-use assets and operating lease liabilities that arise from short-term leases (i.e., leases with a term of 12 months or less). The Company applies ASC 842 to individual leases of assets. Right-of-use (“ROU”) assets and lease liabilities are recognized at the commencement date based on the present value of minimum remaining lease payments over the lease term. For this purpose, the Company considers only payments that are fixed and determinable at the time of commencement. As the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options. When determining the probability of exercising such options, the Company considers contract-based, asset-based, entity-based, and market-based factors. The Company’s lease agreements may contain variable costs such as common area maintenance, insurance, real estate taxes or other costs. Variable lease costs are expensed as incurred in the consolidated statements of operations. ROU assets are initially measured at amounts that represents the present value of the lease payments over the lease, plus any initial direct costs incurred and less any lease incentives received. Annually, all ROU assets are reviewed for impairment. The Company’s lease agreements generally do not contain any residual value guarantees or restrictive covenants. Operating leases are included in operating lease ROU assets, and current and non-current operating lease liabilities on the Company’s consolidated balance sheets. Operating lease costs for operating lease payments are recognized on a straight-line basis over the lease term. The Company does not have any finance leases. Internal-Use Software Development Costs —The Company capitalizes certain costs associated with developing its internal-use software during the application development stage when management with the relevant authority authorizes and commits to the funding of the project, it is probable that the project will be completed, and the software will be used as intended. These costs include personnel and related employee benefits expenses for employees who are directly associated with and who devote time to software projects. Such costs are amortized on a straight-line basis over the estimated useful life of the related asset, which is approximately two years. Costs incurred prior to meeting these criteria, together with costs incurred for training and maintenance, are expensed as incurred and recorded in research and development expenses in the consolidated statements of operations. The Company capitalized internal-use software costs of $ 5,884 , $ 9,785 and $ 16,980 for the years ended December 31, 2019, 2020 and 2021. Intangible Assets —Intangible assets with finite lives are stated at cost, net of accumulated amortization. The Company amortizes its intangible assets on a straight-line basis over an estimated useful life of three to six years . Impairment of Long-Lived Assets —The Company continually monitors events and changes in circumstances that could indicate that carrying amounts of its long-lived assets, including property, equipment, software, and finite-lived intangible assets, may not be recoverable. When such events or changes in circumstances occur, the Company assesses the recoverability of long-lived assets by determining whether the carrying value of such assets will be recovered through their undiscounted expected future cash flows. If the future undiscounted cash flows are less than the carrying amount of these assets, the Company recognizes an impairment loss based on the excess of the carrying amount over the fair value of the assets. There were no impairments of long-lived assets during the years ended December 31, 2019, 2020 and 2021 Revenue Recognition —The Company derives revenue from contracts with customers for access to the learning content hosted on its platform and related services. The Company derives its revenue from three sources: Consumer, Enterprise, and Degrees. Refer to Note 14 ”Segment and Geographic Information" for disaggregation of revenue. Consumer Revenue —The Company generates revenue from the sale of access to course content to consumers. Consumer products include certifications for single courses, Specializations, and catalog-wide subscriptions. Access to single courses are generally purchased at a fixed price for a set period of time, typically six months. Specializations are a series of courses offered by the same educator partner where learners are provided access to these courses on a month-to-month subscription basis. Coursera Plus is the Company’s catalog-wide consumer subscription product, and it is sold in the form of a monthly or annual subscription. All contracts with Consumer customers are billed in advance, generally after a 7-day free trial period. The Company recognizes revenue ratably over the contracted period, after access has been granted to the consumer, as learners have unlimited access to the course content during the contracted period. Consumer learners are entitled to a full refund up to two weeks after payment is received. The Company estimates and establishes a refund reserve based on historical refund rates. The refund reserve was immaterial as of December 31, 2020 and 2021. Enterprise Revenue —The Company sells subscription licenses to business, government, and university customers that provide users the ability to enroll in courses and Specializations and receive certifications upon completion. Enterprise contracts are typically between one and three years in length and can consist of either the purchase of a fixed quantity of seat licenses, each of which allows for unlimited course enrollments by one learner for each year or the purchase of a quantity of course enrollments. In either contract type, the Company recognizes revenue ratably over the contracted period, after access has been granted to the Enterprise customer, as learners have unlimited access to the course content during the contracted period. The Company is the principal with respect to revenue generated from sales to Consumer and Enterprise customers as the Company controls the performance obligation and is the primary obligor with respect to delivering access to course content. Additionally, the Company has inventory risk through recoupable advances sometimes paid to educator partners. Degrees Revenue —University partners contract with the Company for the delivery of bachelor’s and master’s degrees or postgraduate diplomas awarded by the university. The Company’s Degrees revenue contracts involve the performance of a number of promises, including but not limited to hosting the degree content on its learning platform, providing content authoring tools, course production support, and marketing and platform technical support services. As a result, the university partner is the Company’s customer with respect to Degrees revenue. The Company earns a Degrees service fee that is determined based as a percentage of total tuition collected from Degrees students, net of refunds, by the university partner. University partners generally collect the tuition from Degrees students, however in the case of some MasterTrack Certificate offerings this obligation can be the Company's responsibility. The Company has a stand ready obligation to perform degree services continually throughout the period that the degree content is hosted on our platform. Degrees revenue is earned and paid by the university partner for each university term. As a result, revenue generated from each term is recognized ratably from the start of a term through the start of the following term. The Degrees learning experience is delivered on the same proprietary learning platform used by Consumer and Enterprise customers. There is no direct contractual revenue arrangement between the Company and Degrees students, who contract directly with university partners. Further, the university partners typically have additional performance obligations to the Degrees students in the form of designing the curriculum, setting admission criteria, real-time teaching, making admission and financial aid decisions, independently awarding credits, certificates or degrees, and academic or career counseling. Although some MasterTrack Certificate learners are required to accept the terms and conditions prior to tuition payment, the Company's core performance obligations remain similar to the services provided to university partners for their online bachelor’s and master’s degrees or postgraduate diplomas. For these reasons, the university partners control the delivery of degrees hosted on its platform. As a result, the Company recognizes Degrees revenue as the service fee it receives from the university partner. For all customers, revenue from contracts is recognized when control of promised services is transferred. The amount of revenue recognized reflects the consideration that the Company expects to be entitled to receive in exchange for these services. To achieve this, the Company applies the following five steps: 1) Identify the contract with a customer The Company determines a contract with a customer to exist when the contract is approved, each party’s rights regarding the services to be transferred can be identified, the payment terms for the services can be identified, the customer has the ability and intent to pay, and the contract has commercial substance. At contract inception, the Company evaluates whether two or more contracts should be combined and accounted for as a single contract and whether the combined or single contract includes more than one performance obligation. The Company applies judgment in determining the customer’s ability and intent to pay, which is based on a variety of factors, including the customer’s historical payment experience or, in the case of a new Enterprise or Degrees customer, credit and financial information pertaining to the customer. Consumer revenue customers are required to pay in advance either prior to the Company providing access to course content or prior to the expiration of a 7-day free trial. 2) Identify the performance obligations in the contract Performance obligations committed in a contract are identified based on the services that will be transferred to the customer that are both capable of being distinct, whereby the customer can benefit from the service either on its own or together with other resources that are readily available from third parties or from the Company, and are distinct in the context of the contract, whereby the transfer of the services and the products is separately identifiable from other promises in the contract. Customers do not have the ability to take possession of the software supporting the platform and, as a result, contracts are accounted for as service arrangements. For sales to Consumer and Enterprise customers, the Company’s performance obligation generally consists of providing access to its platform and related support services, which is considered one performance obligation. Access to the Company’s platform represents a series of distinct services, as the Company continually provides access to, and fulfills its obligation to, the customer over the contract term. Degrees services involve the performance of a number of promises that include hosting the degree content on the Company’s platform, degree program management, marketing and platform technical support services, each of which are a series of distinct goods or services that are substantially the same, are satisfied over time using the same measure of progress and as a result are considered one performance obligation to stand ready to perform an online degree hosting service for the duration of the degree. 3) Determine the transaction price The transaction price is determined based on the consideration to which the Company expects to be entitled in exchange for transferring services to the customer. Variable consideration is included in the transaction price if, in the Company’s judgment, it is probable that a significant future reversal of cumulative revenue recognized under the contract will not occur. None of the Company’s contracts contain a significant financing component. Revenue is recognized net of any taxes collected from customers, which are subsequently remitted to governmental entities (e.g., sales and other indirect taxes). The Company’s Degrees services revenue is determined based on a fee percentage applied to the total tuition collected from Degrees students, net of refunds, by the university partner. As a result, the revenue earned by the Company is dependent upon the number of learners enrolled and the tuition charged by the university partner. This is a form of variable consideration. The Company estimates the amount of revenue, using an expected value method, that it expects to be entitled to in return for performance of the Degrees services, subject to assessment of the significant future reversal constraint discussed above. These estimates are continually evaluated until such time as the uncertainties are resolved, generally at the time the final term enrollment report is provided by the university partner. 4) Allocate the transaction price to performance obligations in the contract Contracts that contain multiple performance obligations require an allocation of the transaction price to each performance obligation based on each performance obligation’s relative standalone selling price. As noted above, for Consumer and Enterprise customers, access to the Company’s platform and related support services are considered one performance obligation in the context of the contract and, accordingly, the transaction price is allocated to this single performance obligation. Similarly, Degrees services are considered one performance obligation and the transaction price is allocated to this single performance obligation. 5) Recognize revenue when or as performance obligations are satisfied Revenue is recognized at the time the related performance obligation is satisfied by transferring the control of the promised service to a customer. Revenue is recognized in an amount that reflects the consideration that the Company expects to receive in exchange for those services. Fees for access to the Company’s platform and related support services by Consumer and Enterprise customers are considered one performance obligation, and the related revenue is recognized on a straight-line basis over the contract term as the Company satisfies its performance obligation. The Company has a stand ready obligation to perform Degrees services continually throughout the period that the degree content is hosted on its platform. Degrees revenue is earned and paid by the university partner for each university term. As a result, revenue generated from each term is recognized ratably from the start of a term through the start of the following term. Contract Assets and Liabilities —Accounts receivable are recorded at the invoiced amount, net of an allowance for doubtful accounts in the period that the Company’s right to consideration is unconditional. Payment terms on invoiced amounts are typically 30-60 days. The timing of revenue recognition may differ from the timing of invoicing to customers. If revenue is recognized prior to the Company’s unconditional right to consideration, a contract asset is recorded. Deferred revenue consists of cash payments received in advance of performance obligations being delivered and is recorded as current or noncurrent based on the related period in which services will be provided. Contract Acquisition and Fulfillment Costs —Contract acquisition costs consist of sales commissions and related payroll taxes associated with obtaining contracts with Enterprise customers. Deferred Commissions —Customer acquisition costs are primarily related to sales commissions and related payroll taxes earned by the Company’s Enterprise sales force, which are incremental costs to obtaining a contract. Sales commissions and related payroll taxes for new and upsell Enterprise contracts are deferred and then amortized on a straight-line basis over the expected period of benefit, which is estimated to be three years. The Company determined the expected period of benefit by taking into consideration the length of terms in its Enterprise customer contracts, the life of the technology, and other factors. The Company amortizes these costs over three years since the commissions paid upon a contract renewal are not commensurate with the commissions paid on the initial contract and as such, the sales contract period is not commensurate with the expected period of benefit. Commissions and related payroll taxes paid for Enterprise contract renewals are amortized over the renewal term, which is generally two years. Deferred commissions and related payroll taxes that will amortize within the succeeding 12-month period are classified as current and included in deferred costs in the consolidated balance sheets. The remaining balance is classified as noncurrent and included in other assets. Deferred Partner Fees —These fulfillment costs are paid to educator partners in advance of the Company’s performance obligations being completed; are recorded within current assets or other assets, depending on the timing of the related revenue recognition; and are amortized into cost of revenue ratably over the term of the access being provided. Cost of Revenue —Cost of revenue consists of content costs in the form of a fee paid to educator partners and expenses associated with the operation and maintenance of the Company’s platform. These expenses include the cost of servicing both paid learner and educator partner support requests, hosting and bandwidth costs, amortization of acquired technology and internal-use software, customer payment processing fees, and allocated depreciation and facilities costs. Fair Value Measurements —Fair value is defined as the price that would be received for an asset or the “exit price” that would be paid to transfer a liability in the principal or most advantageous market in an orderly transaction between independent market participants on the measurement date. The fair value hierarchy requires an entity to maximize the use of observable inputs, where available. This hierarchy prioritizes the inputs into three broad levels as follows: Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the Company’s own assumptions used to measure assets and liabilities at fair value. The classification of a financial asset or liability within the hierarchy is determined based on the lowest-level input that is significant to the fair value measurement. The Company’s assets and liabilities that were measured at fair value by level within the fair value hierarchy as of December 31, 2020 and 2021, are as follows: As of December 31, 2020 Fair Value Level 1 Level 2 Financial assets: Cash equivalents—money market funds $ 58,997 $ 58,997 $ — Marketable securities: Corporate debt securities 8,551 — 8,551 Commercial paper 26,469 — 26,469 U.S. government Treasury bills 170,382 170,382 — Total financial assets $ 264,399 $ 229,379 $ 35,020 As of December 31, 2021 Fair Value Level 1 Financial assets: Cash equivalents—money market funds $ 539,091 $ 539,091 Marketable securities: U.S. government Treasury bills 241,117 241,117 Total financial assets $ 780,208 $ 780,208 The Company remeasures certain assets, including intangible assets and its equity-method investment in a private company, at fair value on a nonrecurring basis when there are identifiable events or changes in circumstances that may have a significant adverse impact on the fair value of these assets. No such events or changes occurred during the years ended December 31, 2019, 2020 and 2021 . Concentration of Credit Risk —Financial instruments that potentially subject the Company to concentration of credit risk consist of cash, cash equivalents, and marketable securities. The Company invests only in high-credit-quality instruments and maintains its cash equivalents and marketable securities in fixed-income securities. The Company places its cash primarily with domestic financial institutions that are federally insured within statutory limits. For purposes of assessing concentration of credit risk and significant customers, a group of customers under common control or customers that are affiliates of each other are regarded as a single customer. For the years ended December 31, 2019, 2020 and 2021 , the Company did not have any customers that accounted for more than 10 % of the Company’s revenue. As of December 31, 2020, the Company had one customer that accounted for 21 % of its net accounts receivable balance, and as of December 31, 2021, no customer accounted for more than 10 % of its net accounts receivable balance. Income Taxes —The Company is subject to income taxes in the United States and numerous foreign jurisdictions. Significant judgment is required in determining its income tax expense and deferred tax assets and liabilities, including evaluating uncertainties in the application of accounting principles and complex tax laws. The Company utilizes the asset and liability method under which deferred tax assets and liabilities arise from the temporary differences between the tax basis of an asset or liability and its reported amount in the consolidated financial statements, as well as from net operating loss and tax credit carryforwards. Deferred tax amounts are determined by using the tax rates expected to be in effect when the taxes will actually be paid or refunds received, as provided for under currently enacted tax law. A valuation allowance is established if, based upon the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. The Company considers all available evidence, both positive and negative, including historical levels of income, expectations, and risks associated with estimates of future taxable income in assessing the need for a valuation allowance. Net deferred tax assets as of December 31, 2021 was included in other assets in the consolidated balance sheet. The Company regularly reviews its tax positions and benefits to be realized. The Company recognizes tax liabilities based upon its estimate of whether and the extent to which additional taxes will be due when such estimates are more likely than not to be sustained upon examination by the taxing authority. An uncertain income tax position will be recognized only if it is more likely than not to be sustained. The Company recognizes interest and penalties related to income tax matters as income tax expense. Stock-Based Compensation —The Company measures and recognizes compensation expense for stock options, restricted stock units and awards granted to employees, directors, and service providers based on the estimated fair value on the date of the grant. The fair value of each option award is estimated on the grant date using the Black-Scholes option pricing model. The fair value of each restricted stock unit is based on the fair value of the Company’s common stock on the date of grant. The Company estimates the fair value of the shares to be issued under the employee stock purchase plan, or ESPP, using the Black-Scholes option pricing model at the commencement of an offering period. Stock-based compensation is generally recognized on a straight-line basis over the requisite service period. The Company also grants certain awards that have performance-based vesting conditions. Stock-based compensation expense for such awards is recognized using an accelerated attribution method from the time it is deemed probable that the vesting condition will be met through the time the service-based vesting condition has been achieved. The Company recognizes forfeitures as they occur. Net Loss Per Share Attributable to Common Stockholders —Basic and diluted net loss per share attributable to common stockholders is computed in conformity with the two-class method required for participating securities. The Company considers all series of its redeemable convertible preferred stock to be participating securities as the holders of such stock have the right to receive nonforfeitable dividends on a pari passu basis in the event that a dividend is paid on common stock. Under the two-class method, the net loss attributable to common stockholders is not allocated to the redeemable convertible preferred stock as the preferred stockholders do not have

Revenue Recognition

Revenue Recognition	12 Months Ended
	Dec. 31, 2021
Revenue Recognition [Abstract]
Revenue Recognition	3. REVENUE RECOGNITION Contract Balances — The Company’s contract assets and liabilities as of January 1, 2020, December 31, 2020 and 2021 were as follows: January 1, December 31, December 31, Contract assets: Accounts receivable, net of allowance for doubtful accounts $ 16,592 $ 39,976 $ 22,286 Unbilled revenue 64 745 12,110 Total contract assets $ 16,656 $ 40,721 $ 34,396 Contract liabilities: Deferred revenue $ 41,607 $ 80,642 $ 98,488 Total contract liabilities $ 41,607 $ 80,642 $ 98,488 Revenue recognized during the years ended December 31, 2019, 2020 and 2021 that was included in the deferred revenue balances at the beginning of the year was $ 27,501 , $ 37,906 and $ 74,775 , respectively. There were no impairment losses recorded on contract assets during the years ended December 31, 2019, 2020 and 2021. Remaining Performance Obligations —Remaining performance obligations are future revenue that are under noncancelable contracts but have not yet been recognized. As of December 31, 2021 , the Company had remaining performance obligations of $ 274,656 and expects to recognize approximately 60 % as revenue over the next twelve months and the remainder thereafter. Costs to Obtain and Fulfill a Contract —During the years ended December 31, 2019, 2020 and 2021 , the Company capitalized $ 4,906 , $ 11,099 and $ 14,217 , respectively, of commissions and related payroll tax expenditures and amortized $ 1,695 , $ 4,156 and $ 8,197 , respectively, to sales and marketing expense. As of December 31, 2020 and 2021 , the amount of deferred commissions and related payroll tax expenditures included in deferred costs and in other assets was $ 5,990 and $ 6,568 , and $ 9,761 and $ 8,817 , respectively.

Marketable Securities

Marketable Securities	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Marketable Securities	. MARKETABLE SECURITIES The following table presents the Company’s available-for-sale marketable securities as of December 31, 2020 and 2021: As of December 31, 2020 Amortized Gross Gross Estimated Corporate debt $ 8,547 $ 4 $ — $ 8,551 Commercial paper 26,469 — — 26,469 U.S. government Treasury bills 170,366 17 ( 1 ) 170,382 Total marketable securities $ 205,382 $ 21 $ ( 1 ) $ 205,402 As of December 31, 2021 Amortized Gross Gross Estimated U.S. government Treasury bills $ 241,369 $ — $ ( 252 ) $ 241,117 Total marketable securities $ 241,369 $ — $ ( 252 ) $ 241,117 The gross realized gains and losses related to the Company’s marketable securities were not material for the years ended December 31, 2019, 2020 and 2021. The following table presents the cost basis and fair value of available-for-sale marketable securities by contractual maturity date as of December 31, 2020 and 2021: December 31, 2020 December 31, 2021 Amortized Estimated Amortized Estimated Due in one year or less $ 205,382 $ 205,402 $ 241,369 $ 241,117 Investments in an unrealized loss position consisted of the following as of December 31, 2020 and 2021: December 31, 2020 December 31, 2021 Fair Gross Fair Gross U.S. government Treasury bills $ 20,201 $ ( 1 ) $ 241,117 $ ( 252 ) Total investments in an unrealized loss position $ 20,201 $ ( 1 ) $ 241,117 $ ( 252 ) As of December 31, 2020 and 2021 , no investments were in a continuous unrealized loss position for more than 12 months. The Company does not intend to sell any of these investments and it is not more likely than not that the Company would be required to sell these investments before recovery of their amortized cost basis, which may be at maturity.

Consolidated Balance Sheet Comp

Consolidated Balance Sheet Components	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidated Balance Sheet Components	5. CONSOLIDATED BALANCE SHEET COMPONENTS Property, Equipment and Software, net — Property, equipment and software, net as of December 31, 2020 and 2021, consisted of the following: Estimated December 31, 2020 December 31, 2021 Internal-use software 2 years $ 21,582 $ 35,508 Computer equipment and software 2 years 2,928 4,163 Leasehold improvements Shorter of useful life or 7,057 7,119 Furniture and fixtures 5 years 2,973 3,051 Total property, equipment and software 34,540 49,841 Less accumulated depreciation and amortization ( 15,896 ) ( 25,116 ) Property, equipment and software—net $ 18,644 $ 24,725 Depreciation and amortization expense related to property, equipment and software for the years ended December 31, 2019, 2020 and 2021 was $ 4,740 , $ 8,114 and $ 12,513 , respectively, which included amortization expense of internal-use software of $ 3,273 , $ 5,875 and $ 9,675 respectively, that is recorded within cost of revenue in the consolidated statements of operations. Intangible Assets, net — Intangible assets, net as of December 31, 2020 and 2021 consisted of the following: December 31, 2020 December 31, 2021 Estimated Gross Accumulated Net Gross Accumulated Net Assembled workforce 3 years $ 181 $ ( 83 ) $ 98 $ 181 $ ( 143 ) $ 38 Developed technology 6 years 8,446 ( 1,930 ) 6,516 8,446 ( 3,337 ) 5,109 Content assets 5 years 3,956 — 3,956 5,721 ( 777 ) 4,944 Intangible assets $ 12,583 $ ( 2,013 ) $ 10,570 $ 14,348 $ ( 4,257 ) $ 10,091 During the years ended December 31, 2019, 2020 and 2021 , the Company capitalized zero , $ 3,956 and $ 1,765 of content assets, respectively. Intangible assets amortization expense was $ 542 , $ 1,471 and $ 2,244 for the years ended December 31, 2019, 2020 and 2021, respectively. As of December 31, 2021 , the weighted-average remaining amortization period was 0.6 years for assembled workforce, 3.6 years for developed technology and 4.3 years for content assets. Amortization of assembled workforce is included in research and development expenses and amortization of developed technology and content assets is included in cost of revenue in the consolidated statements of operations. As of December 31, 2021, future expected amortization expense for intangible assets was as follows: Years Ending December 31 2022 $ 2,586 2023 2,551 2024 2,558 2025 2,030 2026 364 2027 2 Total $ 10,091

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	6. INCOME TAXES The components of loss before income tax for the years ended December 31, 2019, 2020 and 2021 were as follows: Year Ended December 31, 2019 2020 2021 Domestic $ ( 46,974 ) $ ( 68,128 ) $ ( 148,343 ) Foreign 973 2,828 5,254 Total $ ( 46,001 ) $ ( 65,300 ) $ ( 143,089 ) The income tax expense for the years ended December 31, 2019, 2020 and 2021 consisted of the following: Year Ended December 31, 2019 2020 2021 Current taxes: Federal $ — $ — $ — State — — 11 Foreign 718 1,515 3,025 Total current $ 718 $ 1,515 $ 3,036 Deferred taxes: Federal $ — $ — $ — State — — — Foreign — — ( 910 ) Total deferred $ — $ — $ ( 910 ) Total income tax expense $ 718 $ 1,515 $ 2,126 The reconciliation between the statutory U.S. federal income tax rate and the Company’s effective tax rate as a percentage of loss before income taxes was as follows: Year Ended December 31, 2019 2020 2021 U.S federal income taxes at statutory rate 21.00 % 21.00 % 21.00 % State income taxes, net of federal benefit 1.27 % 1.79 % 4.28 % Foreign income taxes at rates other than the U.S. rate ( 1.22 )% ( 1.02 )% ( 0.66 )% Change in valuation allowance ( 22.30 )% ( 27.74 )% ( 47.32 )% Research and development credits 2.87 % 5.29 % 7.26 % Stock-based compensation ( 2.58 )% ( 0.38 )% 13.30 % Other ( 0.60 )% ( 1.26 )% 0.65 % Effective income tax rate ( 1.56 )% ( 2.32 )% ( 1.49 )% As of December 31, 2020 and 2021, the components of deferred tax assets for federal and state income taxes consisted of the following: As of December 31, 2020 2021 Deferred tax assets: Net operating loss carryforwards $ 71,075 $ 119,093 Accruals and reserves 183 633 Deferred revenue 608 1,489 Stock-based compensation 3,025 14,345 Research and development credits 14,427 25,330 Lease liabilities 5,976 4,643 Gross deferred tax assets 95,294 165,533 Valuation allowance ( 84,065 ) ( 151,768 ) Total deferred tax assets $ 11,229 $ 13,765 Deferred tax liabilities: Depreciation and amortization ( 3,539 ) ( 4,711 ) Deferred commissions ( 2,862 ) ( 4,335 ) Right of use assets ( 4,828 ) ( 3,809 ) Total deferred tax liabilities $ ( 11,229 ) $ ( 12,855 ) Net deferred tax assets $ — $ 910 A valuation allowance is provided for deferred tax assets where the recoverability of the assets is uncertain. The determination to provide a valuation allowance is dependent upon the assessment of whether it is more likely than not that some or all of the deferred tax assets will not be realized. Based on the weight of the available evidence, which includes the Company’s historical operating losses, lack of taxable income, and the accumulated deficit, the Company has provided for a full valuation allowance against its U.S. federal and state deferred tax assets as of December 31, 2020 and 2021. The Company increased the valuation allowance for the years ended December 31, 2020 and 2021 by $ 22,553 and $ 67,703 , respectively. As of December 31, 2021, the Company had U.S. federal and state net operating loss carryforwards of $ 518,200 and $ 158,449 , respectively, and U.S. federal and state research and development tax credit carryforwards of $ 15,436 and $ 9,894 , respectively. If not utilized, certain of the federal and state net operating losses will expire at various dates beginning in 2030, while the federal research and development tax credit carryforwards will expire in various amounts beginning in 2033. State research and development tax credit carryforwards can be carried forward indefinitely. The Company’s net operating loss and tax credit carryovers may be subject to annual limitations of usage, as promulgated by the Internal Revenue Service and similar state provisions, due to ownership changes that may have occurred in the past. The annual limitation may result in the expiration of net operating losses and credits before utilization. The federal net operating loss carryforwards generated after December 31, 2017 have an indefinite carryforward period and are subject to an 80 % deduction limitation based upon taxable income prior to net operating loss deduction. Of the total federal net operating loss carryforwards as of December 31, 2021, $ 367,261 are carried forward indefinitely, but are limited to 80 % of taxable income. On March 27, 2020, the Coronavirus Aid, Relief and Economic Security (“CARES”) Act was enacted and signed into U.S. law to provide economic relief to individuals and businesses facing economic hardship as a result of the COVID-19 pandemic. Changes in tax laws or rates are accounted for in the period of enactment. The CARES Act temporarily removes the 80 % taxable income limitation for tax years beginning before 2021. Furthermore, it allows for a five-year carryback of federal net operating loss arising in 2018, 2019, and 2020. Due to the Company’s loss position, the CARES act did not have a material impact to the Company’s financial statements. The Company files income tax returns in the U.S. federal jurisdiction as well as certain U.S. state and foreign jurisdictions with varying statutes of limitation. Due to loss carryovers, the statutes of limitations remain open for tax years from since inception in the major jurisdictions that the Company is subject to tax. The tax return for the fiscal year ending 2020 is currently under examination in India. The Company is not under examination in any other jurisdictions. The Company did not provide deferred tax liabilities for foreign withholding taxes since the Company intends to permanently reinvest such earnings in respective foreign jurisdictions. The amount of the unrecognized deferred tax liability associated with these earnings is immaterial. Uncertain Tax Positions —As of December 31, 2021 , the Company’s total amount of unrecognized tax benefits was $ 12,539 of which $ 556 would impact the Company’s effective tax rate, if recognized. For the years ended December 31, 2019, 2020 and 2021, the activity related to the unrecognized tax benefits was as follows: Year Ended December 31, 2019 2020 2021 Gross unrecognized tax benefits - beginning balance $ 9,688 $ 14,099 $ 7,477 Increases related to tax positions taken during current year 4,411 2,210 4,850 Increases related to tax positions taken during prior years — — 220 Decreases related to tax positions during prior years — ( 8,832 ) ( 8 ) Gross unrecognized tax benefits - ending balance $ 14,099 $ 7,477 $ 12,539 Interest and penalties related to unrecognized tax benefits are accrued as part of income tax provision and were immaterial as of December 31, 2021. The Company is currently unaware of uncertain tax positions that could result in significant additional payments, accruals, or other material deviation in the next 12 months. The Company records interest and penalties, if any, related to unrecognized tax benefits in income tax expense.

Redeemable Convertible Preferre

Redeemable Convertible Preferred Stock	12 Months Ended
	Dec. 31, 2021
Temporary Equity Disclosure [Abstract]
Redeemable Convertible Preferred Stock	7. REDEEMABLE CONVERTIBLE PREFERRED STOCK Redeemable Convertible Preferred Stock — Upon the closing of the Company’s IPO, all outstanding shares of its redeemable convertible preferred stock automatically converted into 75,305,400 shares of Common Stock on a one-for-one basis. As of December 31, 2021 , there were no shares of redeemable convertible preferred stock issued and outstanding. As of December 31, 2020, redeemable convertible preferred stock consisted of the following: December 31, 2020 Shares Issue Date Authorized Outstanding Issue Price Carrying Liquidation A December 2011 and June 2012 23,023,168 23,023,168 $ 0.9628 $ 22,127 $ 22,167 B June 2013, July 2013, and October 201 3 12,849,539 12,849,539 4.9029 62,901 63,000 C August 2015 and September 2015 12,091,062 12,091,062 5.0935 61,351 61,586 D April 2017, June 2017, September 2017, and October 2017 10,900,409 10,900,409 7.50 81,482 81,753 E April 2019 and July 2019 9,166,666 8,794,164 12.00 104,820 105,530 F July 2020 8,389,961 7,647,058 17.00 129,612 130,000 76,420,805 75,305,400 $ 462,293 $ 464,036 The Company recorded the redeemable convertible preferred stock at fair value on the dates of issuance, net of issuance costs. The Company classified the redeemable convertible preferred stock outside of stockholders’ deficit because in the event of certain “liquidation events” that were not solely within its control (including merger, acquisition, or sale of all or substantially all of its assets), the shares would become redeemable at the option of the holders. The Company did not adjust the carrying values of the redeemable convertible preferred stock to the deemed liquidation values of such shares since a liquidation event was not probable at the consolidated balance sheet date. The significant rights and preferences of the outstanding redeemable convertible preferred stock were as follows: Dividends —Dividend holders of Series A, Series B, Series C, Series D, Series E and Series F redeemable convertible preferred stocks (“Series A,” “Series B,” “Series C,” “Series D,” “Series E,” and “Series F” and collectively, the “Preferred Stock”) were entitled to receive noncumulative dividends at an annual rate of $ 0.077 , $ 0.3922 , $ 0.4075 , $ 0.60 , $ 0.96 and $ 1.36 per share, respectively. Such dividends would be payable when declared by the Company’s Board of Directors (the “Board of Directors”). No dividends would be payable on any common stock until dividends on Series A, Series B, Series C, Series D, Series E and Series F have been paid or declared by the Board of Directors. No dividends were declared or paid. Redemption —While the Preferred Stock was not mandatorily redeemable, it was contingently redeemable in the event of certain “liquidation events” that were not solely within its control (including merger, acquisition, or sale of all or substantially all of its assets). Liquidation Preference —In the event of any liquidation, dissolution, or winding-up of the Company, holders of Series A were entitled to a liquidation preference of $ 0.9628 per share, plus any declared but unpaid dividends prior to, and in preference to, any distributions to the holders of common stock. Holders of Series B were entitled to a liquidation preference of $ 4.9029 per share, plus any declared but unpaid dividends prior to, and in preference to, any distributions to the holders of Series A and common stock. Holders of Series C were entitled to a liquidation preference of $ 5.0935 per share, plus any declared but unpaid dividends prior to, and in preference to, any distributions to the holders of Series A, Series B, and common stock. Holders of Series D were entitled to a liquidation preference of $ 7.50 per share, plus any declared but unpaid dividends prior to, and in preference to, any distributions to the holders of Series A, Series B, Series C, and common stock. Holders of Series E were entitled to a liquidation preference of $ 12.00 per share, plus any declared but unpaid dividends prior to, and in preference to, any distributions to the holders of Series A, Series B, Series C, Series D, and common stock. Holders of Series F were entitled to a liquidation preference of $ 17.00 per share, plus any declared but unpaid dividends prior to, and in preference to, any distributions to the holders of Series A, Series B, Series C, Series D, Series E, and common stock. Any assets remaining following the distribution to the holders of Series A, Series B, Series C, Series D, Series E, and Series F would be distributed ratably among the holders of common stock. Voting Rights —The holders of Series A, Series B, Series C, Series D, Series E and Series F were entitled to the number of votes equal to the number of shares of common stock into which such redeemable convertible preferred stock was convertible. The holders of Preferred Stock, voting as a single class, would be entitled to elect two members of the Board of Directors at any election of directors. The holders of common stock, voting as a single class, would be entitled to elect one member of the Board of Directors at any election of directors. The holders of the Preferred Stock and common stock, voting together as a single class on an as-converted basis, would be entitled to elect any remaining members of the Board of Directors at any election of directors. Conversion —Each share of Series A, Series B, Series C, Series D, Series E, and Series F was convertible, at the option of the holder, into such number of fully paid nonassessable shares of common stock as was determined by dividing by the original issue price by the conversion price. The conversion price and resulting ratio was the same as the original issue price and ratio for each share of Series A, Series B, Series C, Series D, Series E and Series F. The conversion formula would be adjusted for such events as dilutive issuances, stock splits, or business combinations. Each share of Preferred Stock would automatically be converted into shares of common stock at the then-effective conversion price applicable to such share upon the earlier of (i) the date specified by written consent or agreement of holders of a majority of the shares of each series of Preferred Stock then outstanding (each voting separately as a series), or (ii) immediately upon the closing of the sale of the Company’s common stock in a firm commitment, underwritten public offering registered under the Securities Act of 1933, as amended (the “Securities Act”), other than a registration relating solely to a transaction under Rule 145 under the Securities Act (or any successor thereto) or to an employee benefit plan of the Company, the public offering price of which results in aggregate proceeds to the Company (before payment of any underwriters’ discounts and expenses relating to the issuance) of at least $ 50,000 . Notwithstanding the foregoing, each share of any series of Preferred Stock would automatically be converted into shares of common stock at the then-effective conversion price applicable to such share upon the date specified by written consent or agreement of holders of a majority of the shares of such series of Preferred Stock.

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit)	12 Months Ended
	Dec. 31, 2021
Stockholders' Equity Note [Abstract]
Stockholders' Equity (Deficit)	8. STOCKHOLDERS’ EQUITY (DEFICIT) Preferred Stock — In connection with the IPO, t he Company authorized the issuance of 10,000,000 shares of undesignated preferred stock with a par value of $ 0.00001 per share, with rights and preferences, including voting rights, to be designated from time to time by the board of directors. As of December 31, 2021 , there were no shares of preferred stock issued or outstanding. Common Stock Warrants — In June 2012, the Company issued a warrant in connection with an educator partner agreement to purchase up to 571,250 shares of the Company’s common stock at an exercise price of $ 0.20 per share. These warrants expire on the earlier of (i) June 2020, (ii) the sale of substantially all of the Company’s securities, or (iii) 60 days after the termination of the educator partner agreement. The vesting schedule of the warrants was based on attainment of certain customer course completion metrics for the partner’s content through June 2017. As of December 31, 2019, the Company believed that 190,930 of these warrants were vested and exercisable per the terms of the educator partner agreement. In June 2020, the educator partner cash exercised the 190,930 warrants and attempted to net exercise 379,070 of the warrants. The Company and the educator partner entered dispute resolution procedures to resolve the dispute regarding the vesting of the 379,070 net exercised warrants. In December 2020, the dispute was resolved by both parties. The Company issued 187,305 fully vested shares of common stock to the educator partner and the educator partner entered into a contract amendment that expanded the extent of its content hosted on the Company’s platform. The Company did not record a charge to the consolidated income statement as a result of the resolution of the dispute as the value assigned to the settlement element was zero. The Company concluded that there would be significant expected future benefit to be obtained from the expansion of the educator partner’s content on its platform, and recorded the fair value of common stock issued (which was less than the expected fair value of the educator partner’s content to be made available on the Company’s platform) in the amount of $ 3,956 as an intangible content asset as of December 31, 2020 to be amortized over the estimated useful life of 5 years . Amortization commenced on March 1, 2021 when the content was made available on the Company's platform. Stock Incentive Plans —In 2013, the Company adopted the Coursera, Inc. Stock Incentive Plan (“Stock Incentive Plan”) and in 2014, adopted the Coursera, Inc. 2014 Executive Stock Incentive Plan (together, the “Predecessor Plans”), pursuant to which the Company has granted a combination of incentive and nonstatutory stock options and restricted stock units (“RSU”s). The Predecessor Plans were terminated in March 2021 in connection with the IPO but continue to govern the terms and conditions of the outstanding awards granted pursuant to the Predecessor Plans. No further equity awards will be granted under the Predecessor Plans. The Company adopted the 2021 Stock Incentive Plan (the “2021 Plan”) and 2021 Employee Stock Purchase Plan (the “ESPP”) in February 2021, which became effective on March 30, 2021 when the registration statement for the IPO was declared effective (collectively the 2021 Plan, the ESPP and the Predecessor Plans are referred to as the "Plans"). The 2021 Plan provides for the granting of incentive and nonstatutory stock options, RSUs and other equity awards. Pursuant to the ESPP, participants may contribute up to 15 percent of their eligible compensation to purchase shares of common stock at 85 percent of the lower of the market price of the Company's common stock on the date of commencement of the applicable offering period or on the last day of each six-month purchase period. The offering periods start on the first trading day on or after May 11 and November 11 of each year, except for the first offering period, which commenced on the Company’s IPO effective date, or March 30, 2021, and ends on May 10, 2023. As of December 31, 2021 , 14,333,573 shares of the Company's common stock, plus certain automatic annual increases in the number of shares of the Company's common stock reserved for future issuance under the 2021 Plan, and any shares subject to outstanding awards under the Predecessor Plans after the effective date of the 2021 Plan that are subsequently (i) forfeited or terminated, (ii) not issued because such award is settled in cash, or (iii) withheld or reacquired to satisfy the applicable exercise, strike, or purchase price, or a tax withholding obligation, were reserved for future issuance under the 2021 Plan. As of January 1, 2022, an additional 7,095,302 shares of common stock became available for future grants under the 2021 Plan. As of December 31, 2021 , 2,571,952 shares of the Company's common stock, plus certain automatic annual increases in the number of shares of the Company's common stock, were reserved for issuance under the ESPP. As of January 1, 2022, an additional 1,419,060 shares of common stock became available for future issuance under the ESPP pursuant to the provisions thereof that automatically increase the share reserve under such plan each year. Stock Options —The Company may grant options at prices not less than the fair market value at the date of grant. These options generally expire 10 years from the date of grant. Incentive stock options and nonstatutory options generally vest ratably over a four-year service period. Stock option activity under the Plans for the years ended December 31, 2019, 2020 and 2021 was as follows: Number of Weighted- Weighted- Aggregate Balance—January 1, 2019 27,748,135 $ 2.16 8.13 $ 4,574 Granted 8,229,541 5.73 Exercised ( 4,261,484 ) 2.09 Canceled ( 2,750,552 ) 2.08 Balance—December 31, 2019 28,965,640 $ 3.18 8.00 $ 106,730 Granted 10,054,450 7.90 Exercised ( 4,240,315 ) 2.42 Canceled ( 2,321,367 ) 5.04 Balance—December 31, 2020 32,458,408 $ 4.60 7.75 $ 625,058 Granted 663,256 29.99 Exercised ( 8,731,889 ) 3.70 Canceled ( 1,388,903 ) 5.62 Balance—December 31, 2021 23,000,872 $ 5.62 6.81 $ 436,630 Options vested—December 31, 2021 13,931,506 $ 3.48 5.91 $ 292,064 Aggregate intrinsic value represents the difference between the exercise price of the options and the estimated fair value of the Company’s common stock as determined by the Board of Directors. The aggregate intrinsic value of options exercised was $ 15,788 , $ 50,286 , and $ 296,635 for the years ended December 31, 2019, 2020 and 2021. The weighted-average grant-date fair value of options granted for the years ended December 31, 2019, 2020 and 2021 was $ 2.69 , $ 5.66 , and $ 16.23 , respectively. RSUs —During the year ended December 31, 2020, the Company began granting RSUs to its employees and directors. RSUs granted prior to the IPO had service-based and performance-based vesting conditions, both of which must be satisfied in order for RSUs to vest. The service-based vesting condition for these awards is typically satisfied over four years with a cliff vesting period of one year and continued vesting quarterly thereafter. The performance-based vesting condition is satisfied on the earlier of (i) a change in control event or (ii) the first sale of the Company’s common stock pursuant to an initial public offering. Both events were not deemed probable until consummated. Upon the first sale of the Company’s common stock pursuant to its IPO on April 5, 2021, the performance-based vesting condition was satisfied, and therefore, the Company recognized cumulative stock-based compensation expense of $ 16,803 using the accelerated attribution method for the portion of the awards for which the service-based vesting condition had been satisfied. RSUs granted after the IPO do not contain the performance-based vesting condition described above, and the related stock-based compensation expense is recognized on a straight-line basis over the requisite service period. RSU activity during the years ended December 31, 2020 and 2021 was as follows: Number of Weighted- Aggregate Unvested balance—January 1, 2020 — $ — $ — Granted 3,286,400 17.91 Forfeited ( 9,800 ) 12.78 Unvested balance—December 31, 2020 3,276,600 $ 17.92 $ 19,454 Granted 5,405,979 35.13 Released ( 502,135 ) 15.73 Forfeited ( 793,156 ) 27.07 Unvested balance—December 31, 2021 7,387,288 $ 29.68 $ 180,545 The aggregate grant-date fair value of RSUs that vested was zero for the years ended December 31, 2019 and 2020, and $ 18,767 for the year ended December 31, 2021. Stock-Based Compensation Expense —The Company records stock-based compensation expense based on the fair value as determined on the grant date. The Company estimates the fair value of stock options and shares of common stock to be issued under the ESPP utilizing the Black-Scholes option-pricing model. Key assumptions of the Black-Scholes option-pricing model are the risk-free interest rate, expected volatility, expected term and expected dividends. The Company recognizes such compensation expense on a straight-line basis over the requisite vesting period for each award. The fair value of restricted stock awards equals the market value of the underlying stock on the date of grant. These amounts are estimates and, thus, may not be reflective of actual future results, nor amounts ultimately realized by recipients of these grants. A summary of the weighted-average assumptions the Company utilized to record compensation expenses for stock options granted during the years ended December 31, 2019, 2020 and 2021 is as follows: Year Ended December 31, 2019 2020 2021 Fair value of common stock $ 5.70 $ 10.30 $ 29.99 Risk-free interest rate 1.8 % 0.6 % 1.3 % Expected term (in years) 6.1 6.1 6.2 Expected volatility 46.8 % 50.3 % 57.1 % Dividend yield — % — % — % The following table summarizes the assumptions used in estimating the fair value of ESPP using the Black-Scholes option-pricing model: Year Ended December 31, 2021 Risk-free interest rate 0.03 %- 0.51 % Expected term (in years) 0.49 - 2.03 Expected volatility 48.3 %- 61.9 % Dividend yield — % The Company determines valuation assumptions as follows: Fair Value of Common Stock — Prior to the IPO, the fair value was determined by the Company’s Board of Directors. The Board of Directors considers numerous objective and subjective factors to determine the fair value of the Company’s common stock at each meeting in which awards are approved. The factors considered include, but are not limited to: (i) the results of contemporaneous independent third-party valuations of the Company’s common stock; (ii) the prices, rights, preferences, and privileges of the Company’s redeemable convertible preferred stock relative to those of its common stock; (iii) the lack of marketability of the Company’s common stock; (iv) actual operating and financial results; (v) current business conditions and projections; (vi) the likelihood of achieving a liquidity event, such as an initial public offering or sale of the Company, given prevailing market conditions; and (vii) precedent transactions involving the Company’s shares. Subsequent to the IPO, the fair value of the Company's common stock is determined by the closing price, on the date of grant, of its common stock, which is traded on the New York Stock Exchange. Expected Term —The expected term represents the period that the Company’s stock-based awards are expected to be outstanding. For option grants considered to be “plain vanilla,” the Company determined the expected term using the simplified method. The simplified method deems the term to be the average of the time to vesting and the contractual life of the options. For ESPP, the expected term represents the term from the first day of the offering period to the purchase date. Risk-Free Interest Rate —The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant for zero-coupon U.S. Treasury notes with maturities approximately equal to the expected term of the option or ESPP share. Expected Volatility —Since the Company does not have a sufficient trading history of its common stock, the expected volatility was derived from the average historical stock volatilities of several unrelated public companies, within the Company’s industry, that it considers to be comparable to its business over a period equivalent to the expected term of the stock option grants or ESPP shares. Dividend Rate —The expected dividend was assumed to be zero as the Company has never paid dividends and has no current plans to do so. Each of these inputs above is subjective and generally requires significant judgment to determine. Stock-based compensation expense for the years ended December 31, 2019, 2020 and 2021, is classified in the consolidated statements of operations as follows: Year Ended December 31, 2019 2020 2021 Cost of revenue $ 491 $ 516 $ 2,092 Research and development 7,038 6,960 42,783 Sales and marketing 3,189 4,097 25,992 General and administrative 5,599 5,234 20,316 Total $ 16,317 $ 16,807 $ 91,183 The Company capitalized $ 362 , $ 966 and $ 4,890 of stock-based compensation related to its internal-use software during the years ended December 31, 2019, 2020 and 2021, respectively. As of December 31, 2021 , there was a total of $ 50,414 unrecognized employee compensation cost related to unvested stock options, which is expected to be recognized over a weighted-average period of approximately 2.19 years. In addition, as of December 31, 2021 , total unrecognized compensation cost related to unvested RSUs was $ 158,875 which is expected to be recognized over a weighted-average period of approximately 2.43 years. Total unrecognized compensation cost related to ESPP as of December 31, 2021 was $ 15,949 , which is expected to be recognized over a weighted-average period of approximately 0.97 years. Income tax benefits recognized from stock-based compensation expense for the years ended December 31, 2019 and 2020 were immaterial due to cumulative losses and valuation allowances. Income tax benefits recognized from stock-based compensation expense for the year ended December 31, 2021 were $ 821 . Income tax benefits realized related to stock awards vested and exercised for the years ended December 31, 2019 and 2020 were immaterial due to cumulative losses and valuation allowances. For the year ended December 31, 2021, income tax benefits realized related to stock awards vested and exercised were $ 968 . Common Stock Reserved for Issuance — The Company’s common stock reserved for future issuance as of December 31, 2020 and 2021 was as follows: December 31, 2020 December 31, 2021 Conversion of convertible preferred stock 75,305,400 — Stock options outstanding 32,458,408 23,000,872 RSUs outstanding 3,276,600 7,387,288 Shares available for future grants 8,098,484 16,905,525 Total shares of common stock reserved 119,138,892 47,293,685

Net Loss Per Share

Net Loss Per Share	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Net Loss Per Share	9. NET LOSS PER SHARE The following table presents the calculation of basic and diluted net loss per share attributable to common stockholders for the years ended December 31, 2019, 2020 and 2021: Year Ended December 31, 2019 2020 2021 Numerator: Net loss attributable to common stockholders $ ( 46,719 ) $ ( 66,815 ) $ ( 145,215 ) Denominator: Weighted-average shares used in computing net loss per share attributable to common stockholders—basic and diluted 32,276,258 37,207,492 113,587,523 Net loss per share attributable to common stockholders—basic and diluted $ ( 1.45 ) $ ( 1.80 ) $ ( 1.28 ) The following potentially dilutive securities were excluded from the computation of diluted net loss per share calculations for the periods presented because the impact of including them would have been anti-dilutive: As of December 31, 2019 2020 2021 Redeemable convertible preferred stock 67,658,342 75,305,400 — Common stock options 28,965,640 32,458,408 23,000,872 RSUs — 3,276,600 7,387,288 Common stock warrants 571,250 — — Shares subject to repurchase 92,858 52,084 2,607 ESPP — — 65,446 Total 97,288,090 111,092,492 30,456,213

Leases

Leases	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Leases	10. LEASES The Company has entered into various non-cancelable office space operating leases with lease periods expiring through November 2024. These leases do not contain residual value guarantees, covenants, or other restrictions. The components of lease costs for the years ended December 31, 2020 and 2021 were as follows: 2020 2021 Lease costs Operating lease cost $ 6,856 $ 6,663 Short term lease cost 779 1,122 Variable lease cost (1) 1,302 1,690 Total lease costs $ 8,937 $ 9,475 (1) Variable lease cost is primarily related to payments made to the Company’s landlords for common area maintenance, property taxes, insurance, and other operating expenses. Rent expense incurred under operating leases prior to adoption of ASC 842 was $ 4,786 for the year ended December 31, 2019. Future lease payments under the Company’s non-cancelable operating leases, which do not include short-term leases, as of December 31, 2021, were as follows: Operating leases 2022 $ 6,829 2023 7,668 2024 7,226 2025 and thereafter — Total lease payments 21,723 Less imputed interest ( 1,828 ) Present value of operating lease liabilities $ 19,895 Operating lease liabilities, current 8,031 Operating lease liabilities, non-current 11,864 Total operating lease liabilities $ 19,895 Supplemental cash flow information related to the Company’s operating leases for years ended December 31, 2020 and 2021 as well as the weighted-average remaining lease term and weighted-average discount rate as of December 31, 2020 and 2021 were as follows: Year Ended December 31, 2020 2021 Supplemental cash flow information Cash paid for amounts included in the measurement of operating lease liabilities $ 7,548 $ 7,683 Operating lease ROU assets obtained in exchange for lease liabilities — — As of December 31, Lease term and discount rate 2020 2021 Weighted-average remaining operating lease term (years) 3.87 2.92 Weighted-average operating lease discount rate 5.68 % 5.70 %

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	11. COMMITMENTS AND CONTINGENCIES Purchase Obligations— Purchase obligations relate mainly to a third-party cloud infrastructure agreement and subscription arrangements as well as service agreements used to facilitate the Company’s operations. As of December 31, 2021 , the Company had approximately $ 47,644 of future minimum payments under the Company’s non-cancelable purchase obligations which is expected to be paid through 2026. Purchase 2022 $ 9,491 2023 9,611 2024 9,665 2025 8,159 2026 10,718 Thereafter — Total $ 47,644 Litigation —The Company continually evaluates uncertainties associated with litigation and records a charge equal to at least the minimum estimated liability for a loss contingency when both of the following conditions are met: (i) information available prior to issuance of the financial statements indicates that it is probable that a liability has been incurred at the date of the financial statements and (ii) the loss or range of loss can be reasonably estimated. If the Company determines that a loss is possible and a range of the loss can be reasonably estimated, the Company discloses the range of the possible loss in the notes to the consolidated financial statements. The Company evaluates, on a quarterly basis, developments in its legal matters that could affect the amount of liability that has been previously accrued, if any, and the matters and related ranges of possible losses disclosed, and makes adjustments and changes to its disclosures as appropriate. Significant judgment is required to determine both likelihood of there being, and the estimated amount of, a loss related to such matters. Until the final resolution of such matters, there may be an exposure to loss, and such amounts could be material. For legal proceedings for which there is a reasonable possibility of loss (meaning those losses for which the likelihood is more than remote but less than probable), the Company has determined it does not have material exposure on an aggregate basis at this time. Indemnifications —In the normal course of business, the Company enters into contracts and agreements that contain a variety of representations and warranties and provides for the potential of general indemnification obligations. The Company’s exposure under these agreements is unknown because it involves future claims that may be made against the Company but have not yet been made. To date, the Company has not paid any material claims or has been required to defend any actions related to its indemnification obligations; however, the Company may record charges in the future as a result of these indemnification obligations. In addition, the Company has indemnification agreements with certain of its directors, executive officers, and other employees that require it, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service with the Company. The terms of such obligations may vary.

401(k) Plan

401(k) Plan	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
401(K) Plan	12. 401(k) PLAN The Company has a 401(k) savings plan (the “401(k) Plan”) that qualifies as a deferred salary arrangement under Section 401(k) of the Internal Revenue Code. Under the 401(k) Plan, participating employees may elect to contribute up to 100 % of their eligible compensation, subject to certain limitations. The 401(k) Plan provides for a discretionary employer-matching contribution. The Company has made no matching contributions to the 401(k) Plan for the years ended December 31, 2019, 2020 and 2021 .

Related Party Transaction

Related Party Transaction	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Related Party Transaction	13. RELATED-PARTY TRANSACTION During the year ended December 31, 2017, the Company entered into a content sourcing agreement with a related party in the normal course of business. Content fees earned by the related party during the years ended December 31, 2019, 2020 and 2021 were $ 5,876 , $ 6,171 , and $ 6,558 , respectively. As of December 31, 2020 and 2021 , outstanding educator partner payables related to this content sourcing agreement were $ 4,821 and $ 1,502 , respectively.

Segment and Geographic Informat

Segment and Geographic Information	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Segment and Geographic Information	14. SEGMENT AND GEOGRAPHIC INFORMATION The Company’s Chief Executive Officer is its CODM. For the purposes of allocating resources and assessing performance, the CODM examines three segments which are the Company’s three revenue sources: Consumer, Enterprise, and Degrees. This is also consistent with how the Company disaggregates revenue. The Consumer segment targets individual learners seeking to obtain hands-on learning, gain valuable job skills, receive professional-level certifications, and otherwise increase their knowledge and advance their careers. The Enterprise segment is focused on helping businesses and government customers upskill and reskill their employees and citizens, respectively, and helping university customers deliver online courses to their students. The Degrees segment is engaged in partnering with universities to deliver fully online bachelor’s and master’s degrees. The CODM measures the performance of each segment primarily based on segment revenue and segment gross profit. Segment gross profit, as presented below, is defined as segment revenue less certain costs of revenue which represent content costs paid to educator partners. Content costs only apply to the Consumer and Enterprise segments as there is no content cost attributable to the Degrees segment. Instead, in the Degrees segment, the Company earns a Degrees service fee based on a percentage of the total online student tuition collected by the university partner. Expenses other than content costs included in cost of revenue are not allocated to segments because they are managed at the consolidated corporate level. These unallocated costs include platform and support costs, stock-based compensation expense, amortization of acquired intangible assets and internal-use software. In addition, the Company does not allocate sales and marketing expenses, research and development expenses, and general and administrative expenses because the CODM does not include the information in his measurement of the performance of the operating segments. While the Company has expanded its customer segments from Consumer to Enterprise and to Degrees, the Company’s technical and operating platforms continue to support the entire Company. The CODM does not use asset information by segments to assess performance and make decisions regarding allocation of resources, and the Company does not track its long-lived assets by segment. The geographic identification of these assets is set forth below. Financial information for each reportable segment was as follows: Year Ended December 31, Revenue 2019 2020 2021 Consumer $ 121,011 $ 192,909 $ 246,187 Enterprise 48,262 70,784 120,429 Degrees 15,138 29,818 48,671 Total revenue $ 184,411 $ 293,511 $ 415,287 Segment gross profit Consumer $ 64,645 $ 106,509 $ 161,510 Enterprise 34,184 48,972 81,253 Degrees 15,138 29,818 48,671 Total segment gross profit $ 113,967 $ 185,299 $ 291,434 Reconciliation of segment gross profit to gross profit Platform and support costs $ 14,861 $ 22,833 $ 28,014 Stock-based compensation expense 491 516 2,092 Amortization of internal-use software 3,273 5,875 9,675 Amortization of intangibles 520 1,410 2,184 Total reconciling items $ 19,145 $ 30,634 $ 41,965 Gross profit $ 94,822 $ 154,665 $ 249,469 Geographic Information: Revenue: The following table summarizes the revenue by region based on the billing address of the Company’s customers: Year Ended December 31, 2019 2020 2021 United States $ 89,951 $ 143,478 $ 210,513 Europe, Middle East, and Africa 52,086 83,227 112,643 Asia Pacific 27,672 40,732 54,763 Other 14,702 26,074 37,368 Total $ 184,411 $ 293,511 $ 415,287 No single country other than the United States represented 10 % or more of the Company’s total revenue during the years ended December 31, 2019, 2020 and 2021 . Long-lived assets: The following table presents the Company’s long-lived assets, consisting of property, equipment and software, net of depreciation and amortization, and operating lease right-of-use assets, by geographic region: December 31, 2020 December 31, 2021 United States $ 39,202 $ 40,245 Rest of World 1,064 801 Total $ 40,266 $ 41,046

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation —The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”).
Principles of Consolidation	Principles of Consolidation —The consolidated financial statements include the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Segment Information	Segment Information —The Company defines its segments as those operations the chief operating decision maker (“CODM”), determined to be the Chief Executive Officer of the Company, regularly reviews to allocate resources and assess performance. For the years ended December 31, 2019, 2020 and 2021 , the Company operated under three segments: Consumer, Enterprise, and Degrees. The Company continually monitors and reviews its segment reporting structure in accordance with Accounting Standards Codification (“ASC”) Topic 280, Segment Reporting , to determine whether any changes have occurred that would impact its reportable segments. For further information on the Company’s segment reporting, see Note 14 “Segment and Geographic Information.”
Use of Estimates	Use of Estimates —The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities and related disclosures at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. On an ongoing basis, the Company evaluates its estimates, including those related to fair value of common stock and stock-based awards; period of benefit for capitalized commissions; internal-use software costs; useful lives of long-lived assets; the carrying value of operating lease right-of-use assets; valuation of intangible assets and income tax expense, including the valuation of deferred tax assets and liabilities, among others. The World Health Organization declared in March 2020 that the outbreak of the coronavirus disease (“COVID-19") constitutes a pandemic. Since early 2020, the world has been, and continues to be impacted by COVID-19 and its variants. The COVID-19 pandemic has caused general business disruption worldwide beginning in January 2020. The global impact of COVID-19 continues to rapidly evolve, and the Company will continue to actively monitor the situation, including progress made through vaccinations, and the effects on its business and operations. The Company does not yet know the full extent of potential impacts on its business or operations or on the global economy as a whole, particularly if the COVID-19 pandemic continues and persists for an extended period of time. Given the uncertainty, the Company cannot reasonably estimate the impact on its future results of operations, cash flows, or financial condition. As of the date of issuance of the consolidated financial statements, the Company is not aware of any specific event or circumstance that would require it to update its estimates, judgments, or the carrying value of its assets or liabilities. These estimates may change as new events occur and additional information is obtained and are recognized in the consolidated statements as soon as they become known. Actual results could differ from those estimates, and any such differences may be material to the Company’s consolidated financial statements.
Cash and Cash Equivalents	Cash and Cash Equivalents —The Company considers all highly liquid investments with an original maturity at the date of purchase of three months or less to be cash equivalents.
Marketable Securities	Marketable Securities —Marketable securities consist of corporate debt, commercial paper securities, and U.S. government Treasury bills, with an original maturity greater than three months at the date of purchase and are classified as available-for-sale securities. As the Company views these securities as available to support current operations, it has classified all available-for-sale securities as current assets. Available-for-sale securities are initially recorded at cost and periodically adjusted to fair value with unrealized gains and losses reported as a component of accumulated other comprehensive income (loss) in stockholders’ equity (deficit), while realized gains and losses are reported within other income (expense), net as a component of net loss. An impairment charge is recorded in the consolidated statements of operations for declines in fair value below the cost of an individual investment that are deemed to be other-than-temporary. The Company did not identify any marketable securities as other-than-temporarily impaired during the years ended December 31, 2019, 2020 and 2021 .
Restricted Cash	Restricted Cash —As of December 31, 2020 and 2021 , the Company had letters of credit of $ 2,548 and $ 2,061 , respectively, related to its corporate headquarters’ operating lease agreement.
Accounts Receivable	Accounts Receivable —Accounts receivable includes billed and unbilled receivable, net of allowances for doubtful accounts. An allowance for doubtful accounts is established based on the Company’s assessment of the collectibility of accounts. Management regularly reviews the adequacy of the allowance for doubtful accounts by considering the age of each outstanding invoice; each customer’s expected ability to pay; and the collection history with each customer, when applicable, to determine whether a specific allowance is appropriate. Accounts receivable deemed uncollectible are charged against the allowance for doubtful accounts when identified. The allowance for doubtful accounts and related activities were not material for the years ended December 31, 2019, 2020 and 2021 .
Property, Equipment, and Software	Property, Equipment and Software —Property, equipment and software are stated at cost, less accumulated depreciation and amortization. Depreciation is recorded using the straight-line method over the estimated useful lives of the assets, generally two to five years . Leasehold improvements are amortized over the shorter of the estimated useful lives of the improvements or the remaining lease term.
Deferred Offering Costs	Deferred Offering Costs —Deferred offering costs consist primarily of direct and incremental legal, accounting, and other fees related to the Company’s IPO. Prior to the IPO, all deferred offering costs were capitalized in prepaids expenses and other current assets on the consolidated balance sheets. Upon completion of the IPO, $ 6,449 of the deferred offering costs were reclassified into stockholder's equity as a reduction of the IPO proceeds.
Leases	Leases —The Company determines if an arrangement is a lease and the classification of that lease, if applicable, at inception based on: (1) whether the contract involves the use of a distinct identified asset, (2) whether the Company obtains the right to substantially all the economic benefits from the use of the asset throughout the period, and (3) whether the Company has a right to direct the use of the asset. For leases that commenced before the Company's adoption date of Accounting Standards Update No. 2016-02, Leases, (“ASC 842”), the Company elected the practical expedients to carryforward its historical lease classification, its assessment on whether a contract was or contains a lease, and its initial direct costs. The Company also elected to not separate lease and non-lease components and to not recognize operating lease right-of-use assets and operating lease liabilities that arise from short-term leases (i.e., leases with a term of 12 months or less). The Company applies ASC 842 to individual leases of assets. Right-of-use (“ROU”) assets and lease liabilities are recognized at the commencement date based on the present value of minimum remaining lease payments over the lease term. For this purpose, the Company considers only payments that are fixed and determinable at the time of commencement. As the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options. When determining the probability of exercising such options, the Company considers contract-based, asset-based, entity-based, and market-based factors. The Company’s lease agreements may contain variable costs such as common area maintenance, insurance, real estate taxes or other costs. Variable lease costs are expensed as incurred in the consolidated statements of operations. ROU assets are initially measured at amounts that represents the present value of the lease payments over the lease, plus any initial direct costs incurred and less any lease incentives received. Annually, all ROU assets are reviewed for impairment. The Company’s lease agreements generally do not contain any residual value guarantees or restrictive covenants. Operating leases are included in operating lease ROU assets, and current and non-current operating lease liabilities on the Company’s consolidated balance sheets. Operating lease costs for operating lease payments are recognized on a straight-line basis over the lease term. The Company does not have any finance leases.
Internal-Use Software Development Costs	Internal-Use Software Development Costs —The Company capitalizes certain costs associated with developing its internal-use software during the application development stage when management with the relevant authority authorizes and commits to the funding of the project, it is probable that the project will be completed, and the software will be used as intended. These costs include personnel and related employee benefits expenses for employees who are directly associated with and who devote time to software projects. Such costs are amortized on a straight-line basis over the estimated useful life of the related asset, which is approximately two years. Costs incurred prior to meeting these criteria, together with costs incurred for training and maintenance, are expensed as incurred and recorded in research and development expenses in the consolidated statements of operations. The Company capitalized internal-use software costs of $ 5,884 , $ 9,785 and $ 16,980 for the years ended December 31, 2019, 2020 and 2021.
Intangible Assets	Intangible Assets —Intangible assets with finite lives are stated at cost, net of accumulated amortization. The Company amortizes its intangible assets on a straight-line basis over an estimated useful life of three to six years .
Impairment of Long-Lived Asset	Impairment of Long-Lived Assets —The Company continually monitors events and changes in circumstances that could indicate that carrying amounts of its long-lived assets, including property, equipment, software, and finite-lived intangible assets, may not be recoverable. When such events or changes in circumstances occur, the Company assesses the recoverability of long-lived assets by determining whether the carrying value of such assets will be recovered through their undiscounted expected future cash flows. If the future undiscounted cash flows are less than the carrying amount of these assets, the Company recognizes an impairment loss based on the excess of the carrying amount over the fair value of the assets. There were no impairments of long-lived assets during the years ended December 31, 2019, 2020 and 2021
Revenue Recognition	Revenue Recognition —The Company derives revenue from contracts with customers for access to the learning content hosted on its platform and related services. The Company derives its revenue from three sources: Consumer, Enterprise, and Degrees. Refer to Note 14 ”Segment and Geographic Information" for disaggregation of revenue. Consumer Revenue —The Company generates revenue from the sale of access to course content to consumers. Consumer products include certifications for single courses, Specializations, and catalog-wide subscriptions. Access to single courses are generally purchased at a fixed price for a set period of time, typically six months. Specializations are a series of courses offered by the same educator partner where learners are provided access to these courses on a month-to-month subscription basis. Coursera Plus is the Company’s catalog-wide consumer subscription product, and it is sold in the form of a monthly or annual subscription. All contracts with Consumer customers are billed in advance, generally after a 7-day free trial period. The Company recognizes revenue ratably over the contracted period, after access has been granted to the consumer, as learners have unlimited access to the course content during the contracted period. Consumer learners are entitled to a full refund up to two weeks after payment is received. The Company estimates and establishes a refund reserve based on historical refund rates. The refund reserve was immaterial as of December 31, 2020 and 2021. Enterprise Revenue —The Company sells subscription licenses to business, government, and university customers that provide users the ability to enroll in courses and Specializations and receive certifications upon completion. Enterprise contracts are typically between one and three years in length and can consist of either the purchase of a fixed quantity of seat licenses, each of which allows for unlimited course enrollments by one learner for each year or the purchase of a quantity of course enrollments. In either contract type, the Company recognizes revenue ratably over the contracted period, after access has been granted to the Enterprise customer, as learners have unlimited access to the course content during the contracted period. The Company is the principal with respect to revenue generated from sales to Consumer and Enterprise customers as the Company controls the performance obligation and is the primary obligor with respect to delivering access to course content. Additionally, the Company has inventory risk through recoupable advances sometimes paid to educator partners. Degrees Revenue —University partners contract with the Company for the delivery of bachelor’s and master’s degrees or postgraduate diplomas awarded by the university. The Company’s Degrees revenue contracts involve the performance of a number of promises, including but not limited to hosting the degree content on its learning platform, providing content authoring tools, course production support, and marketing and platform technical support services. As a result, the university partner is the Company’s customer with respect to Degrees revenue. The Company earns a Degrees service fee that is determined based as a percentage of total tuition collected from Degrees students, net of refunds, by the university partner. University partners generally collect the tuition from Degrees students, however in the case of some MasterTrack Certificate offerings this obligation can be the Company's responsibility. The Company has a stand ready obligation to perform degree services continually throughout the period that the degree content is hosted on our platform. Degrees revenue is earned and paid by the university partner for each university term. As a result, revenue generated from each term is recognized ratably from the start of a term through the start of the following term. The Degrees learning experience is delivered on the same proprietary learning platform used by Consumer and Enterprise customers. There is no direct contractual revenue arrangement between the Company and Degrees students, who contract directly with university partners. Further, the university partners typically have additional performance obligations to the Degrees students in the form of designing the curriculum, setting admission criteria, real-time teaching, making admission and financial aid decisions, independently awarding credits, certificates or degrees, and academic or career counseling. Although some MasterTrack Certificate learners are required to accept the terms and conditions prior to tuition payment, the Company's core performance obligations remain similar to the services provided to university partners for their online bachelor’s and master’s degrees or postgraduate diplomas. For these reasons, the university partners control the delivery of degrees hosted on its platform. As a result, the Company recognizes Degrees revenue as the service fee it receives from the university partner. For all customers, revenue from contracts is recognized when control of promised services is transferred. The amount of revenue recognized reflects the consideration that the Company expects to be entitled to receive in exchange for these services. To achieve this, the Company applies the following five steps: 1) Identify the contract with a customer The Company determines a contract with a customer to exist when the contract is approved, each party’s rights regarding the services to be transferred can be identified, the payment terms for the services can be identified, the customer has the ability and intent to pay, and the contract has commercial substance. At contract inception, the Company evaluates whether two or more contracts should be combined and accounted for as a single contract and whether the combined or single contract includes more than one performance obligation. The Company applies judgment in determining the customer’s ability and intent to pay, which is based on a variety of factors, including the customer’s historical payment experience or, in the case of a new Enterprise or Degrees customer, credit and financial information pertaining to the customer. Consumer revenue customers are required to pay in advance either prior to the Company providing access to course content or prior to the expiration of a 7-day free trial. 2) Identify the performance obligations in the contract Performance obligations committed in a contract are identified based on the services that will be transferred to the customer that are both capable of being distinct, whereby the customer can benefit from the service either on its own or together with other resources that are readily available from third parties or from the Company, and are distinct in the context of the contract, whereby the transfer of the services and the products is separately identifiable from other promises in the contract. Customers do not have the ability to take possession of the software supporting the platform and, as a result, contracts are accounted for as service arrangements. For sales to Consumer and Enterprise customers, the Company’s performance obligation generally consists of providing access to its platform and related support services, which is considered one performance obligation. Access to the Company’s platform represents a series of distinct services, as the Company continually provides access to, and fulfills its obligation to, the customer over the contract term. Degrees services involve the performance of a number of promises that include hosting the degree content on the Company’s platform, degree program management, marketing and platform technical support services, each of which are a series of distinct goods or services that are substantially the same, are satisfied over time using the same measure of progress and as a result are considered one performance obligation to stand ready to perform an online degree hosting service for the duration of the degree. 3) Determine the transaction price The transaction price is determined based on the consideration to which the Company expects to be entitled in exchange for transferring services to the customer. Variable consideration is included in the transaction price if, in the Company’s judgment, it is probable that a significant future reversal of cumulative revenue recognized under the contract will not occur. None of the Company’s contracts contain a significant financing component. Revenue is recognized net of any taxes collected from customers, which are subsequently remitted to governmental entities (e.g., sales and other indirect taxes). The Company’s Degrees services revenue is determined based on a fee percentage applied to the total tuition collected from Degrees students, net of refunds, by the university partner. As a result, the revenue earned by the Company is dependent upon the number of learners enrolled and the tuition charged by the university partner. This is a form of variable consideration. The Company estimates the amount of revenue, using an expected value method, that it expects to be entitled to in return for performance of the Degrees services, subject to assessment of the significant future reversal constraint discussed above. These estimates are continually evaluated until such time as the uncertainties are resolved, generally at the time the final term enrollment report is provided by the university partner. 4) Allocate the transaction price to performance obligations in the contract Contracts that contain multiple performance obligations require an allocation of the transaction price to each performance obligation based on each performance obligation’s relative standalone selling price. As noted above, for Consumer and Enterprise customers, access to the Company’s platform and related support services are considered one performance obligation in the context of the contract and, accordingly, the transaction price is allocated to this single performance obligation. Similarly, Degrees services are considered one performance obligation and the transaction price is allocated to this single performance obligation. 5) Recognize revenue when or as performance obligations are satisfied Revenue is recognized at the time the related performance obligation is satisfied by transferring the control of the promised service to a customer. Revenue is recognized in an amount that reflects the consideration that the Company expects to receive in exchange for those services. Fees for access to the Company’s platform and related support services by Consumer and Enterprise customers are considered one performance obligation, and the related revenue is recognized on a straight-line basis over the contract term as the Company satisfies its performance obligation. The Company has a stand ready obligation to perform Degrees services continually throughout the period that the degree content is hosted on its platform. Degrees revenue is earned and paid by the university partner for each university term. As a result, revenue generated from each term is recognized ratably from the start of a term through the start of the following term.
Contract Assets and Liabilities	Contract Assets and Liabilities —Accounts receivable are recorded at the invoiced amount, net of an allowance for doubtful accounts in the period that the Company’s right to consideration is unconditional. Payment terms on invoiced amounts are typically 30-60 days. The timing of revenue recognition may differ from the timing of invoicing to customers. If revenue is recognized prior to the Company’s unconditional right to consideration, a contract asset is recorded. Deferred revenue consists of cash payments received in advance of performance obligations being delivered and is recorded as current or noncurrent based on the related period in which services will be provided.
Contract Acquisition and Fulfillment Costs	Contract Acquisition and Fulfillment Costs —Contract acquisition costs consist of sales commissions and related payroll taxes associated with obtaining contracts with Enterprise customers. Deferred Commissions —Customer acquisition costs are primarily related to sales commissions and related payroll taxes earned by the Company’s Enterprise sales force, which are incremental costs to obtaining a contract. Sales commissions and related payroll taxes for new and upsell Enterprise contracts are deferred and then amortized on a straight-line basis over the expected period of benefit, which is estimated to be three years. The Company determined the expected period of benefit by taking into consideration the length of terms in its Enterprise customer contracts, the life of the technology, and other factors. The Company amortizes these costs over three years since the commissions paid upon a contract renewal are not commensurate with the commissions paid on the initial contract and as such, the sales contract period is not commensurate with the expected period of benefit. Commissions and related payroll taxes paid for Enterprise contract renewals are amortized over the renewal term, which is generally two years. Deferred commissions and related payroll taxes that will amortize within the succeeding 12-month period are classified as current and included in deferred costs in the consolidated balance sheets. The remaining balance is classified as noncurrent and included in other assets. Deferred Partner Fees —These fulfillment costs are paid to educator partners in advance of the Company’s performance obligations being completed; are recorded within current assets or other assets, depending on the timing of the related revenue recognition; and are amortized into cost of revenue ratably over the term of the access being provided.
Cost of Revenue	Cost of Revenue —Cost of revenue consists of content costs in the form of a fee paid to educator partners and expenses associated with the operation and maintenance of the Company’s platform. These expenses include the cost of servicing both paid learner and educator partner support requests, hosting and bandwidth costs, amortization of acquired technology and internal-use software, customer payment processing fees, and allocated depreciation and facilities costs.
Fair Value Measurements	Fair Value Measurements —Fair value is defined as the price that would be received for an asset or the “exit price” that would be paid to transfer a liability in the principal or most advantageous market in an orderly transaction between independent market participants on the measurement date. The fair value hierarchy requires an entity to maximize the use of observable inputs, where available. This hierarchy prioritizes the inputs into three broad levels as follows: Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the Company’s own assumptions used to measure assets and liabilities at fair value. The classification of a financial asset or liability within the hierarchy is determined based on the lowest-level input that is significant to the fair value measurement. The Company’s assets and liabilities that were measured at fair value by level within the fair value hierarchy as of December 31, 2020 and 2021, are as follows: As of December 31, 2020 Fair Value Level 1 Level 2 Financial assets: Cash equivalents—money market funds $ 58,997 $ 58,997 $ — Marketable securities: Corporate debt securities 8,551 — 8,551 Commercial paper 26,469 — 26,469 U.S. government Treasury bills 170,382 170,382 — Total financial assets $ 264,399 $ 229,379 $ 35,020 As of December 31, 2021 Fair Value Level 1 Financial assets: Cash equivalents—money market funds $ 539,091 $ 539,091 Marketable securities: U.S. government Treasury bills 241,117 241,117 Total financial assets $ 780,208 $ 780,208 The Company remeasures certain assets, including intangible assets and its equity-method investment in a private company, at fair value on a nonrecurring basis when there are identifiable events or changes in circumstances that may have a significant adverse impact on the fair value of these assets. No such events or changes occurred during the years ended December 31, 2019, 2020 and 2021 .
Concentration of Credit Risk	Concentration of Credit Risk —Financial instruments that potentially subject the Company to concentration of credit risk consist of cash, cash equivalents, and marketable securities. The Company invests only in high-credit-quality instruments and maintains its cash equivalents and marketable securities in fixed-income securities. The Company places its cash primarily with domestic financial institutions that are federally insured within statutory limits. For purposes of assessing concentration of credit risk and significant customers, a group of customers under common control or customers that are affiliates of each other are regarded as a single customer. For the years ended December 31, 2019, 2020 and 2021 , the Company did not have any customers that accounted for more than 10 % of the Company’s revenue. As of December 31, 2020, the Company had one customer that accounted for 21 % of its net accounts receivable balance, and as of December 31, 2021, no customer accounted for more than 10 % of its net accounts receivable balance.
Income Taxes	Income Taxes —The Company is subject to income taxes in the United States and numerous foreign jurisdictions. Significant judgment is required in determining its income tax expense and deferred tax assets and liabilities, including evaluating uncertainties in the application of accounting principles and complex tax laws. The Company utilizes the asset and liability method under which deferred tax assets and liabilities arise from the temporary differences between the tax basis of an asset or liability and its reported amount in the consolidated financial statements, as well as from net operating loss and tax credit carryforwards. Deferred tax amounts are determined by using the tax rates expected to be in effect when the taxes will actually be paid or refunds received, as provided for under currently enacted tax law. A valuation allowance is established if, based upon the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. The Company considers all available evidence, both positive and negative, including historical levels of income, expectations, and risks associated with estimates of future taxable income in assessing the need for a valuation allowance. Net deferred tax assets as of December 31, 2021 was included in other assets in the consolidated balance sheet. The Company regularly reviews its tax positions and benefits to be realized. The Company recognizes tax liabilities based upon its estimate of whether and the extent to which additional taxes will be due when such estimates are more likely than not to be sustained upon examination by the taxing authority. An uncertain income tax position will be recognized only if it is more likely than not to be sustained. The Company recognizes interest and penalties related to income tax matters as income tax expense.
Stock-Based Compensation	Stock-Based Compensation —The Company measures and recognizes compensation expense for stock options, restricted stock units and awards granted to employees, directors, and service providers based on the estimated fair value on the date of the grant. The fair value of each option award is estimated on the grant date using the Black-Scholes option pricing model. The fair value of each restricted stock unit is based on the fair value of the Company’s common stock on the date of grant. The Company estimates the fair value of the shares to be issued under the employee stock purchase plan, or ESPP, using the Black-Scholes option pricing model at the commencement of an offering period. Stock-based compensation is generally recognized on a straight-line basis over the requisite service period. The Company also grants certain awards that have performance-based vesting conditions. Stock-based compensation expense for such awards is recognized using an accelerated attribution method from the time it is deemed probable that the vesting condition will be met through the time the service-based vesting condition has been achieved. The Company recognizes forfeitures as they occur.
Net Loss Per Share Attributable to Common Stockholders	Net Loss Per Share Attributable to Common Stockholders —Basic and diluted net loss per share attributable to common stockholders is computed in conformity with the two-class method required for participating securities. The Company considers all series of its redeemable convertible preferred stock to be participating securities as the holders of such stock have the right to receive nonforfeitable dividends on a pari passu basis in the event that a dividend is paid on common stock. Under the two-class method, the net loss attributable to common stockholders is not allocated to the redeemable convertible preferred stock as the preferred stockholders do not have a contractual obligation to share in the Company’s losses. Basic net loss per share is computed by dividing net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. Diluted net loss per share is computed by giving effect to all potentially dilutive common stock equivalents to the extent they are dilutive. For purposes of this calculation, redeemable convertible preferred stock, common stock options, restricted stock units, ESPP, early exercised common stock options, and common stock warrants are considered to be common stock equivalents but have been excluded from the calculation of diluted net loss per share attributable to common stockholders as their effect is anti-dilutive for the period presented.
Comprehensive Loss	Comprehensive Loss —Comprehensive loss is composed of two components: net loss and other comprehensive income (loss). Other comprehensive income (loss) refers to revenue, expenses, gains, and losses that under GAAP are recorded as an element of stockholders’ equity (deficit) but are excluded from net loss.
Research and Development	Research and Development —Expenditures for research and development of the Company’s technology and non-refundable contributions to the development of partner content are expensed when incurred unless they qualify as internal-use software development costs. Research and development costs consist principally of personnel costs, consulting services, content development contributions, and allocated facilities costs.
Advertising Costs	Advertising Costs —Advertising costs are expensed as incurred and are included in sales and marketing expense. For the years ended December 31, 2019, 2020 and 2021 , these costs were $ 11,566 , $ 21,005 and $ 28,740 , respectively.
Foreign Currency	Foreign Currency —The majority of the Company’s sales contracts are denominated in U.S. dollars. In addition, the functional currency of the Company’s international subsidiaries is U.S. dollars. Foreign currency transaction gains and losses have not been material for any periods presented.
New Accounting Pronouncements Recently Adopted and Not Yet Adopted	New Accounting Pronouncements Recently Adopted The Company is an emerging growth company, as defined in the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”). Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until those standards apply to private companies. The Company has elected to use this extended transition period for complying with new or revised accounting standards that have different effective dates for public and private companies until the earlier of the date that it (i) is no longer an emerging growth company or (ii) affirmatively and irrevocably opts out of the extended transition period provided in the JOBS Act. As a result, the consolidated financial statements may not be comparable to companies that comply with the new or revised accounting pronouncements as of public company effective dates. The JOBS Act does not preclude an emerging growth company from early adopting new or revised accounting standards. The Company early adopted ASU 2016-02, Leases (ASC 842), effective January 1, 2020, ASU 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, effective July 1, 2021. The Company expects to use the extended transition period for any other new or revised accounting standards during the period for which the Company remains an emerging growth company. In August 2018, the FASB issued ASU 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 update requires capitalization of the implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. Further, the standard also requires the Company to amortize the capitalized implementation costs of a hosting arrangement over the term of the hosting arrangement. This update is effective for the Company for the annual reporting period commencing January 1, 2021 and interim periods within the annual reporting period commencing January 1, 2022, and early adoption is permitted. The Company early adopted ASU 2018-15 on July 1, 2021 on a prospective basis for implementation costs incurred after January 1, 2021. The adoption of the standard did not have a material impact on the consolidated financial statements. In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 805) : Accounting for Contract Assets and Contract Liabilities from Contracts with Customers , which requires contract assets and contract liabilities acquired in a business combination to be recognized and measured by the acquirer on the acquisition date in accordance with Revenue from Contracts with Customers (Topic 606) , as if it had originated the contracts. Under the current business combinations guidance, such assets and liabilities are recognized by the acquirer at fair value on the acquisition date. This new guidance is effective for the Company in 2023 and interim periods within that year, and early adoption is permitted. The Company early adopted this guidance upon issuance to all business combinations that occur on or after the date of adoption. The adoption had no impact on the Company’s consolidated financial statements as there were no acquisitions accounted for as business combinations during the year ended December 31, 2021. New Accounting Pronouncements Not Yet Adopted In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes . This standard simplifies the accounting for income taxes by eliminating certain exceptions to the guidance in Topic 740 related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period, and the recognition of deferred tax liabilities for outside basis differences. The guidance also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill and the allocation of consolidated income taxes to separate financial statements of entities not subject to income tax. ASU 2019-12 will be effective for the Company in 2022. Upon adoption, the Company must apply certain aspects of this standard retrospectively for all periods presented while other aspects are applied on a modified retrospective basis through a cumulative-effect adjustment to accumulated deficit as of the beginning of the fiscal year of adoption. The Company does not expect a material impact of this update on its consolidated financial statements and related disclosures. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses , which provides new authoritative guidance with respect to the measurement of credit losses on financial instruments. This update changes the impairment model for most financial assets and certain other instruments by introducing a current expected credit loss (“CECL”) model. The CECL model is a more forward-looking approach based on expected losses rather than incurred losses, requiring entities to estimate and record losses expected over the remaining contractual life of an asset. The guidance will be effective for the Company in 2023 and early adoption beginning in 2019 is permitted. The Company is currently evaluating the impact from the adoption of this guidance on the consolidated financial statements and related disclosures.

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Fair Value Measurements at Fair Value by Level Within Fair Value Hierarchy	The Company’s assets and liabilities that were measured at fair value by level within the fair value hierarchy as of December 31, 2020 and 2021, are as follows: As of December 31, 2020 Fair Value Level 1 Level 2 Financial assets: Cash equivalents—money market funds $ 58,997 $ 58,997 $ — Marketable securities: Corporate debt securities 8,551 — 8,551 Commercial paper 26,469 — 26,469 U.S. government Treasury bills 170,382 170,382 — Total financial assets $ 264,399 $ 229,379 $ 35,020 As of December 31, 2021 Fair Value Level 1 Financial assets: Cash equivalents—money market funds $ 539,091 $ 539,091 Marketable securities: U.S. government Treasury bills 241,117 241,117 Total financial assets $ 780,208 $ 780,208

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2021
Revenue Recognition [Abstract]
Summary of Contract Assets and Liabilities	The Company’s contract assets and liabilities as of January 1, 2020, December 31, 2020 and 2021 were as follows: January 1, December 31, December 31, Contract assets: Accounts receivable, net of allowance for doubtful accounts $ 16,592 $ 39,976 $ 22,286 Unbilled revenue 64 745 12,110 Total contract assets $ 16,656 $ 40,721 $ 34,396 Contract liabilities: Deferred revenue $ 41,607 $ 80,642 $ 98,488 Total contract liabilities $ 41,607 $ 80,642 $ 98,488

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements at Fair Value by Level Within Fair Value Hierarchy	The Company’s assets and liabilities that were measured at fair value by level within the fair value hierarchy as of December 31, 2020 and 2021, are as follows: As of December 31, 2020 Fair Value Level 1 Level 2 Financial assets: Cash equivalents—money market funds $ 58,997 $ 58,997 $ — Marketable securities: Corporate debt securities 8,551 — 8,551 Commercial paper 26,469 — 26,469 U.S. government Treasury bills 170,382 170,382 — Total financial assets $ 264,399 $ 229,379 $ 35,020 As of December 31, 2021 Fair Value Level 1 Financial assets: Cash equivalents—money market funds $ 539,091 $ 539,091 Marketable securities: U.S. government Treasury bills 241,117 241,117 Total financial assets $ 780,208 $ 780,208

Marketable Securities (Tables)

Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Summary of Available-for-Sale Marketable Securities	The following table presents the Company’s available-for-sale marketable securities as of December 31, 2020 and 2021: As of December 31, 2020 Amortized Gross Gross Estimated Corporate debt $ 8,547 $ 4 $ — $ 8,551 Commercial paper 26,469 — — 26,469 U.S. government Treasury bills 170,366 17 ( 1 ) 170,382 Total marketable securities $ 205,382 $ 21 $ ( 1 ) $ 205,402 As of December 31, 2021 Amortized Gross Gross Estimated U.S. government Treasury bills $ 241,369 $ — $ ( 252 ) $ 241,117 Total marketable securities $ 241,369 $ — $ ( 252 ) $ 241,117
Schedule of the Cost Basis and Fair Value of Available-for-sale Securities by Contractual Maturity Date	The following table presents the cost basis and fair value of available-for-sale marketable securities by contractual maturity date as of December 31, 2020 and 2021: December 31, 2020 December 31, 2021 Amortized Estimated Amortized Estimated Due in one year or less $ 205,382 $ 205,402 $ 241,369 $ 241,117
Schedule of Investments in an Unrealized Loss Position	Investments in an unrealized loss position consisted of the following as of December 31, 2020 and 2021: December 31, 2020 December 31, 2021 Fair Gross Fair Gross U.S. government Treasury bills $ 20,201 $ ( 1 ) $ 241,117 $ ( 252 ) Total investments in an unrealized loss position $ 20,201 $ ( 1 ) $ 241,117 $ ( 252 )

Consolidated Balance Sheet Co_2

Consolidated Balance Sheet Components (Tables)	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Property, Equipment and Software	Property, equipment and software, net as of December 31, 2020 and 2021, consisted of the following: Estimated December 31, 2020 December 31, 2021 Internal-use software 2 years $ 21,582 $ 35,508 Computer equipment and software 2 years 2,928 4,163 Leasehold improvements Shorter of useful life or 7,057 7,119 Furniture and fixtures 5 years 2,973 3,051 Total property, equipment and software 34,540 49,841 Less accumulated depreciation and amortization ( 15,896 ) ( 25,116 ) Property, equipment and software—net $ 18,644 $ 24,725
Schedule of Intangible Assets	Intangible assets, net as of December 31, 2020 and 2021 consisted of the following: December 31, 2020 December 31, 2021 Estimated Gross Accumulated Net Gross Accumulated Net Assembled workforce 3 years $ 181 $ ( 83 ) $ 98 $ 181 $ ( 143 ) $ 38 Developed technology 6 years 8,446 ( 1,930 ) 6,516 8,446 ( 3,337 ) 5,109 Content assets 5 years 3,956 — 3,956 5,721 ( 777 ) 4,944 Intangible assets $ 12,583 $ ( 2,013 ) $ 10,570 $ 14,348 $ ( 4,257 ) $ 10,091
Schedule of Future Expected Amortization Expense for Intangible Assets	As of December 31, 2021, future expected amortization expense for intangible assets was as follows: Years Ending December 31 2022 $ 2,586 2023 2,551 2024 2,558 2025 2,030 2026 364 2027 2 Total $ 10,091

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Schedule of Components of Loss Before Income Tax	The components of loss before income tax for the years ended December 31, 2019, 2020 and 2021 were as follows: Year Ended December 31, 2019 2020 2021 Domestic $ ( 46,974 ) $ ( 68,128 ) $ ( 148,343 ) Foreign 973 2,828 5,254 Total $ ( 46,001 ) $ ( 65,300 ) $ ( 143,089 )
Schedule of Income Tax Expense	The income tax expense for the years ended December 31, 2019, 2020 and 2021 consisted of the following: Year Ended December 31, 2019 2020 2021 Current taxes: Federal $ — $ — $ — State — — 11 Foreign 718 1,515 3,025 Total current $ 718 $ 1,515 $ 3,036 Deferred taxes: Federal $ — $ — $ — State — — — Foreign — — ( 910 ) Total deferred $ — $ — $ ( 910 ) Total income tax expense $ 718 $ 1,515 $ 2,126
Schedule of Reconciliation Between the Statutory U.S. Federal Income Tax Rate and the Company's Effective Tax Rate as a Percentage of Loss Before Income Taxes	The reconciliation between the statutory U.S. federal income tax rate and the Company’s effective tax rate as a percentage of loss before income taxes was as follows: Year Ended December 31, 2019 2020 2021 U.S federal income taxes at statutory rate 21.00 % 21.00 % 21.00 % State income taxes, net of federal benefit 1.27 % 1.79 % 4.28 % Foreign income taxes at rates other than the U.S. rate ( 1.22 )% ( 1.02 )% ( 0.66 )% Change in valuation allowance ( 22.30 )% ( 27.74 )% ( 47.32 )% Research and development credits 2.87 % 5.29 % 7.26 % Stock-based compensation ( 2.58 )% ( 0.38 )% 13.30 % Other ( 0.60 )% ( 1.26 )% 0.65 % Effective income tax rate ( 1.56 )% ( 2.32 )% ( 1.49 )%
Schedule of Components of Deferred Tax Assets for Federal and State Income Taxes	As of December 31, 2020 and 2021, the components of deferred tax assets for federal and state income taxes consisted of the following: As of December 31, 2020 2021 Deferred tax assets: Net operating loss carryforwards $ 71,075 $ 119,093 Accruals and reserves 183 633 Deferred revenue 608 1,489 Stock-based compensation 3,025 14,345 Research and development credits 14,427 25,330 Lease liabilities 5,976 4,643 Gross deferred tax assets 95,294 165,533 Valuation allowance ( 84,065 ) ( 151,768 ) Total deferred tax assets $ 11,229 $ 13,765 Deferred tax liabilities: Depreciation and amortization ( 3,539 ) ( 4,711 ) Deferred commissions ( 2,862 ) ( 4,335 ) Right of use assets ( 4,828 ) ( 3,809 ) Total deferred tax liabilities $ ( 11,229 ) $ ( 12,855 ) Net deferred tax assets $ — $ 910
Schedule of Activity Related to the Unrecognized Tax Benefits	For the years ended December 31, 2019, 2020 and 2021, the activity related to the unrecognized tax benefits was as follows: Year Ended December 31, 2019 2020 2021 Gross unrecognized tax benefits - beginning balance $ 9,688 $ 14,099 $ 7,477 Increases related to tax positions taken during current year 4,411 2,210 4,850 Increases related to tax positions taken during prior years — — 220 Decreases related to tax positions during prior years — ( 8,832 ) ( 8 ) Gross unrecognized tax benefits - ending balance $ 14,099 $ 7,477 $ 12,539

Redeemable Convertible Prefer_2

Redeemable Convertible Preferred Stock (Tables)	12 Months Ended
	Dec. 31, 2021
Temporary Equity Disclosure [Abstract]
Schedule of Redeemable Convertible Preferred Stock	As of December 31, 2020, redeemable convertible preferred stock consisted of the following: December 31, 2020 Shares Issue Date Authorized Outstanding Issue Price Carrying Liquidation A December 2011 and June 2012 23,023,168 23,023,168 $ 0.9628 $ 22,127 $ 22,167 B June 2013, July 2013, and October 201 3 12,849,539 12,849,539 4.9029 62,901 63,000 C August 2015 and September 2015 12,091,062 12,091,062 5.0935 61,351 61,586 D April 2017, June 2017, September 2017, and October 2017 10,900,409 10,900,409 7.50 81,482 81,753 E April 2019 and July 2019 9,166,666 8,794,164 12.00 104,820 105,530 F July 2020 8,389,961 7,647,058 17.00 129,612 130,000 76,420,805 75,305,400 $ 462,293 $ 464,036

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit) (Tables)	12 Months Ended
	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Schedule of Stock Option Activity under the Plans	Stock option activity under the Plans for the years ended December 31, 2019, 2020 and 2021 was as follows: Number of Weighted- Weighted- Aggregate Balance—January 1, 2019 27,748,135 $ 2.16 8.13 $ 4,574 Granted 8,229,541 5.73 Exercised ( 4,261,484 ) 2.09 Canceled ( 2,750,552 ) 2.08 Balance—December 31, 2019 28,965,640 $ 3.18 8.00 $ 106,730 Granted 10,054,450 7.90 Exercised ( 4,240,315 ) 2.42 Canceled ( 2,321,367 ) 5.04 Balance—December 31, 2020 32,458,408 $ 4.60 7.75 $ 625,058 Granted 663,256 29.99 Exercised ( 8,731,889 ) 3.70 Canceled ( 1,388,903 ) 5.62 Balance—December 31, 2021 23,000,872 $ 5.62 6.81 $ 436,630 Options vested—December 31, 2021 13,931,506 $ 3.48 5.91 $ 292,064
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	RSU activity during the years ended December 31, 2020 and 2021 was as follows: Number of Weighted- Aggregate Unvested balance—January 1, 2020 — $ — $ — Granted 3,286,400 17.91 Forfeited ( 9,800 ) 12.78 Unvested balance—December 31, 2020 3,276,600 $ 17.92 $ 19,454 Granted 5,405,979 35.13 Released ( 502,135 ) 15.73 Forfeited ( 793,156 ) 27.07 Unvested balance—December 31, 2021 7,387,288 $ 29.68 $ 180,545
Summary of Weighted Average Assumptions to Record Compensation Expenses for Stock Options Granted	A summary of the weighted-average assumptions the Company utilized to record compensation expenses for stock options granted during the years ended December 31, 2019, 2020 and 2021 is as follows: Year Ended December 31, 2019 2020 2021 Fair value of common stock $ 5.70 $ 10.30 $ 29.99 Risk-free interest rate 1.8 % 0.6 % 1.3 % Expected term (in years) 6.1 6.1 6.2 Expected volatility 46.8 % 50.3 % 57.1 % Dividend yield — % — % — %
Summary of Estimated Assumptions Used in the Black-Scholes Valuation Model to Value out ESPP Purchase Rights	The following table summarizes the assumptions used in estimating the fair value of ESPP using the Black-Scholes option-pricing model: Year Ended December 31, 2021 Risk-free interest rate 0.03 %- 0.51 % Expected term (in years) 0.49 - 2.03 Expected volatility 48.3 %- 61.9 % Dividend yield — %
Summary of Stock-Based Compensation Expense in the Consolidated Statements of Operations	Stock-based compensation expense for the years ended December 31, 2019, 2020 and 2021, is classified in the consolidated statements of operations as follows: Year Ended December 31, 2019 2020 2021 Cost of revenue $ 491 $ 516 $ 2,092 Research and development 7,038 6,960 42,783 Sales and marketing 3,189 4,097 25,992 General and administrative 5,599 5,234 20,316 Total $ 16,317 $ 16,807 $ 91,183
Summary of Shares of Common Stock Reserved for Future Issuance	The Company’s common stock reserved for future issuance as of December 31, 2020 and 2021 was as follows: December 31, 2020 December 31, 2021 Conversion of convertible preferred stock 75,305,400 — Stock options outstanding 32,458,408 23,000,872 RSUs outstanding 3,276,600 7,387,288 Shares available for future grants 8,098,484 16,905,525 Total shares of common stock reserved 119,138,892 47,293,685

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Net Loss Per Share	The following table presents the calculation of basic and diluted net loss per share attributable to common stockholders for the years ended December 31, 2019, 2020 and 2021: Year Ended December 31, 2019 2020 2021 Numerator: Net loss attributable to common stockholders $ ( 46,719 ) $ ( 66,815 ) $ ( 145,215 ) Denominator: Weighted-average shares used in computing net loss per share attributable to common stockholders—basic and diluted 32,276,258 37,207,492 113,587,523 Net loss per share attributable to common stockholders—basic and diluted $ ( 1.45 ) $ ( 1.80 ) $ ( 1.28 )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following potentially dilutive securities were excluded from the computation of diluted net loss per share calculations for the periods presented because the impact of including them would have been anti-dilutive: As of December 31, 2019 2020 2021 Redeemable convertible preferred stock 67,658,342 75,305,400 — Common stock options 28,965,640 32,458,408 23,000,872 RSUs — 3,276,600 7,387,288 Common stock warrants 571,250 — — Shares subject to repurchase 92,858 52,084 2,607 ESPP — — 65,446 Total 97,288,090 111,092,492 30,456,213

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Schedule of Components of Lease Costs	The components of lease costs for the years ended December 31, 2020 and 2021 were as follows: 2020 2021 Lease costs Operating lease cost $ 6,856 $ 6,663 Short term lease cost 779 1,122 Variable lease cost (1) 1,302 1,690 Total lease costs $ 8,937 $ 9,475 (1) Variable lease cost is primarily related to payments made to the Company’s landlords for common area maintenance, property taxes, insurance, and other operating expenses.
Schedule of Future Lease Payments	Future lease payments under the Company’s non-cancelable operating leases, which do not include short-term leases, as of December 31, 2021, were as follows: Operating leases 2022 $ 6,829 2023 7,668 2024 7,226 2025 and thereafter — Total lease payments 21,723 Less imputed interest ( 1,828 ) Present value of operating lease liabilities $ 19,895 Operating lease liabilities, current 8,031 Operating lease liabilities, non-current 11,864 Total operating lease liabilities $ 19,895
Schedule of Supplemental Cash Flow and Weighted-Average Remaining Lease Term and Discount Rate	Supplemental cash flow information related to the Company’s operating leases for years ended December 31, 2020 and 2021 as well as the weighted-average remaining lease term and weighted-average discount rate as of December 31, 2020 and 2021 were as follows: Year Ended December 31, 2020 2021 Supplemental cash flow information Cash paid for amounts included in the measurement of operating lease liabilities $ 7,548 $ 7,683 Operating lease ROU assets obtained in exchange for lease liabilities — — As of December 31, Lease term and discount rate 2020 2021 Weighted-average remaining operating lease term (years) 3.87 2.92 Weighted-average operating lease discount rate 5.68 % 5.70 %

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Payments under the Company's Non-Cancellable Purchase Obligations	Purchase 2022 $ 9,491 2023 9,611 2024 9,665 2025 8,159 2026 10,718 Thereafter — Total $ 47,644

Segment and Geographic Inform_2

Segment and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Schedule of Financial Information for Each Reportable Segment	Financial information for each reportable segment was as follows: Year Ended December 31, Revenue 2019 2020 2021 Consumer $ 121,011 $ 192,909 $ 246,187 Enterprise 48,262 70,784 120,429 Degrees 15,138 29,818 48,671 Total revenue $ 184,411 $ 293,511 $ 415,287 Segment gross profit Consumer $ 64,645 $ 106,509 $ 161,510 Enterprise 34,184 48,972 81,253 Degrees 15,138 29,818 48,671 Total segment gross profit $ 113,967 $ 185,299 $ 291,434 Reconciliation of segment gross profit to gross profit Platform and support costs $ 14,861 $ 22,833 $ 28,014 Stock-based compensation expense 491 516 2,092 Amortization of internal-use software 3,273 5,875 9,675 Amortization of intangibles 520 1,410 2,184 Total reconciling items $ 19,145 $ 30,634 $ 41,965 Gross profit $ 94,822 $ 154,665 $ 249,469
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area	The following table summarizes the revenue by region based on the billing address of the Company’s customers: Year Ended December 31, 2019 2020 2021 United States $ 89,951 $ 143,478 $ 210,513 Europe, Middle East, and Africa 52,086 83,227 112,643 Asia Pacific 27,672 40,732 54,763 Other 14,702 26,074 37,368 Total $ 184,411 $ 293,511 $ 415,287
Schedule of Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country	The following table presents the Company’s long-lived assets, consisting of property, equipment and software, net of depreciation and amortization, and operating lease right-of-use assets, by geographic region: December 31, 2020 December 31, 2021 United States $ 39,202 $ 40,245 Rest of World 1,064 801 Total $ 40,266 $ 41,046

Organization and Description _2

Organization and Description of Business (Details)	Apr. 19, 2021USD ($)shares	Apr. 05, 2021USD ($)$ / sharesshares	Dec. 31, 2021USD ($)shares	Dec. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)
Subsidiary Sale Of Stock [Line Items]
Net proceeds from common stock sold | $	$ 72,802,000		$ 525,284,000	$ 0	$ 0
Deferred offering costs | $			$ 6,449,000
Redeemable convertible preferred stock, shares issued upon conversion | shares			0	75,305,400
Common Stock
Subsidiary Sale Of Stock [Line Items]
Issuance of additional common stock under IPO to underwriter | shares			17,024,276
IPO
Subsidiary Sale Of Stock [Line Items]
Number of shares sold (in shares) | shares		14,664,776
Stock price (in dollars per share) | $ / shares		$ 33
Proceeds from sale of stock, net | $		$ 452,482,000
Issuance of additional common stock under IPO to underwriter | shares	2,359,500
Deferred offering costs | $		6,449,000
Underwriting discounts and commissions | $	$ 5,061,000	$ 31,456,000
IPO | Common Stock
Subsidiary Sale Of Stock [Line Items]
Redeemable convertible preferred stock, shares issued upon conversion | shares		75,305,400
Conversion ratio		1

Basis of Presentation and Sum_4

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021USD ($)SegmentCustomer	Dec. 31, 2020USD ($)CustomerSegment	Dec. 31, 2019USD ($)Segment
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of operating segments | Segment	3	3	3
Letters of credit	$ 2,061,000	$ 2,548,000
Restricted cash	2,061,000	2,548,000	$ 3,090,000
Impairments of long lived assets	$ 0	0	0
Property, equipment, and software estimated useful lives	2 years
Deferred offering costs	$ 6,449,000
Company capitalized internal-use software costs	16,980,000	$ 9,785,000	5,884,000
Estimated useful lives		5 years
Advertising costs	28,740,000	$ 21,005,000	11,566,000
Restricted cash in prepaid expenses and other current assets	$ 0	$ 0	$ 769,000
Minimum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property, equipment, and software estimated useful lives	5 years
Estimated useful lives	6 years
Sales Revenue | Customer Concentration Risk | No Customers | Minimum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentrations of credit risk, percentage	10.00%	10.00%	10.00%
Accounts Receivable
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of customers | Customer	0	1
Accounts Receivable | Customer Concentration Risk | Customer One
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentrations of credit risk, percentage		21.00%

Basis of Presentation and Sum_5

Basis of Presentation and Summary of Significant Accounting Policies - Fair Value Measurements at Fair Value by Level Within Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total financial assets	$ 780,208	$ 264,399
Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	539,091	58,997
Corporate Debt Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities		8,551
Commercial Paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities		26,469
U.S. Government Treasury Bills
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities	241,117	170,382
Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total financial assets	780,208	229,379
Level 1 | Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash equivalents	539,091	58,997
Level 1 | U.S. Government Treasury Bills
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities	$ 241,117	170,382
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total financial assets		35,020
Level 2 | Corporate Debt Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities		8,551
Level 2 | Commercial Paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities		$ 26,469

Revenue Recognition - Summary o

Revenue Recognition - Summary of Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020
Contract assets:
Accounts receivable, net of allowance for doubtful accounts	$ 22,286	$ 39,976	$ 16,592
Unbilled revenue	12,110	745	64
Total contract assets	34,396	40,721	16,656
Contract liabilities:
Deferred revenue	98,488	80,642	41,607
Total contract liabilities	$ 98,488	$ 80,642	$ 41,607

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue Recognition [Abstract]
Revenue Recognized	$ 74,775,000	$ 37,906,000	$ 27,501,000
Impairment losses on contract assets	0	0	0
Commissions and related payroll tax expenditures	14,217,000	11,099,000	4,906,000
Amortization, sales and marketing expenses	8,197,000	4,156,000	$ 1,695,000
Deferred costs	6,568,000	5,990,000
Other assets	$ 8,817,000	$ 9,761,000

Revenue Recognition - Additio_2

Revenue Recognition - Additional Information (Details 1) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-10-01 $ in Thousands	Dec. 31, 2021USD ($)
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligation	$ 274,656
Percent of remaining performance obligations to be recognized	60.00%
Period for satisfaction of remaining performance obligation	12 months

Marketable Securities - Summary

Marketable Securities - Summary of Available-for-Sale Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 241,369	$ 205,382
Gross Unrealized Gains		21
Gross Unrealized Losses	(252)	(1)
Estimated Fair Market Value	241,117	205,402
Corporate Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost		8,547
Gross Unrealized Gains		4
Estimated Fair Market Value		8,551
Commercial Paper
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost		26,469
Estimated Fair Market Value		26,469
U.S. Government Treasury Bills
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	241,369	170,366
Gross Unrealized Gains		17
Gross Unrealized Losses	(252)	(1)
Estimated Fair Market Value	$ 241,117	$ 170,382

Marketable Securities - Schedul

Marketable Securities - Schedule of the Cost Basis and Fair Value of Available-for-sale Securities by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Amortized Cost	$ 241,369	$ 205,382
Estimated Fair Market Value	$ 241,117	$ 205,402

Marketable Securities - Sched_2

Marketable Securities - Schedule of Investments in an Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Fair Value	$ 241,117	$ 20,201
Gross Unrealized Losses	(252)	(1)
U.S. Government Treasury Bills
Schedule Of Available For Sale Securities [Line Items]
Fair Value	241,117	20,201
Gross Unrealized Losses	$ (252)	$ (1)

Marketable Securities - Additio

Marketable Securities - Additional Information (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0	$ 0

Consolidated Balance Sheet Co_3

Consolidated Balance Sheet Components - Schedule of Property, Equipment and Software (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Total property, equipment, and software	$ 49,841	$ 34,540
Less accumulated depreciation and amortization	(25,116)	(15,896)
Property, equipment, and software—net	$ 24,725	18,644
Internal-use Software
Property Plant And Equipment [Line Items]
Property, equipment, and software, Useful Life	2 years
Total property, equipment, and software	$ 35,508	21,582
Computer Equipment and Software
Property Plant And Equipment [Line Items]
Property, equipment, and software, Useful Life	2 years
Total property, equipment, and software	$ 4,163	2,928
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property, equipment, and software	$ 7,119	7,057
Property, equipment, and software, Useful Life	Shorter of useful life orremaining lease term
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property, equipment, and software, Useful Life	5 years
Total property, equipment, and software	$ 3,051	$ 2,973

Consolidated Balance Sheet Co_4

Consolidated Balance Sheet Components - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Depreciation and amortization	$ 14,757	$ 9,585	$ 5,282
Amortization expenses of intangible assets	2,244	1,471	542
Intangible assets	$ 10,091	10,570
Assembled Workforce
Property Plant And Equipment [Line Items]
Weighted average remaining amortization period for intangible asset	7 months 6 days
Developed Technology
Property Plant And Equipment [Line Items]
Weighted average remaining amortization period for intangible asset	3 years 7 months 6 days
Content Asset
Property Plant And Equipment [Line Items]
Intangible assets	$ 1,765	3,956	0
Weighted average remaining amortization period for intangible asset	4 years 3 months 18 days
Property, Equipment and Software
Property Plant And Equipment [Line Items]
Depreciation and amortization	$ 12,513	8,114	4,740
Internal-use Software
Property Plant And Equipment [Line Items]
Amortization expenses of intangible assets	$ 9,675	$ 5,875	$ 3,273

Consolidated Balance Sheet Co_5

Consolidated Balance Sheet Components - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Estimated useful lives		5 years
Gross carrying value	$ 14,348	$ 12,583
Accumulated amortization	(4,257)	(2,013)
Net carrying value	$ 10,091	10,570
Assembled Workforce
Finite Lived Intangible Assets [Line Items]
Estimated useful lives	3 years
Gross carrying value	$ 181	181
Accumulated amortization	(143)	(83)
Net carrying value	$ 38	98
Developed Technology
Finite Lived Intangible Assets [Line Items]
Estimated useful lives	6 years
Gross carrying value	$ 8,446	8,446
Accumulated amortization	(3,337)	(1,930)
Net carrying value	$ 5,109	6,516
Content Asset
Finite Lived Intangible Assets [Line Items]
Estimated useful lives	5 years
Gross carrying value	$ 5,721	3,956
Accumulated amortization	(777)	0
Net carrying value	$ 4,944	$ 3,956

Consolidated Balance Sheet Co_6

Consolidated Balance Sheet Components - Schedule of Future Expected Amortization Expense for Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
2022	$ 2,586
2023	2,551
2024	2,558
2025	2,030
2026	364
2027	2
Net carrying value	$ 10,091	$ 10,570

Income Taxes - Schedule of Comp

Income Taxes - Schedule of Components of Loss Before Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ (148,343)	$ (68,128)	$ (46,974)
Foreign	5,254	2,828	973
Loss before income taxes	$ (143,089)	$ (65,300)	$ (46,001)

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Curremnt expense:
Federal	$ 0	$ 0	$ 0
State	11
Foreign	3,025	1,515	718
Total current	3,036	1,515	718
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	0	0	0
State	0	0	0
Foreign	(910)
Total deferred	(910)
Total income tax expense	$ 2,126	$ 1,515	$ 718

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	Mar. 27, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Effective tax rate		(1.49%)	(2.32%)	(1.56%)
Increase (decrease) in valuation allowance		$ 67,703	$ 22,553
Research and development tax credits carryforwards		25,330	14,427
Unrecognized tax benefits		12,539	$ 7,477	$ 14,099		$ 9,688
Impact of unrecognized tax benefits on effective tax rate, if recognized		556
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		518,200
Research and development tax credits carryforwards		$ 15,436
Operating loss carryforwards, deduction limitation	80.00%	80.00%			80.00%
Indefinite operating loss carryforwards		$ 367,261
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		158,449
Research and development tax credits carryforwards		$ 9,894

Income Taxes - Schedule of Reco

Income Taxes - Schedule of Reconciliation Between the Statutory U.S. Federal Income Tax Rate and the Company's Effective Tax Rate as a Percentage of Loss Before Income Taxes (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S Federal income taxes at statutory rate	21.00%	21.00%	21.00%
State income taxes, net of federal benefit	4.28%	1.79%	1.27%
Foreign income taxes at rates other than the U.S. rate	(0.66%)	(1.02%)	(1.22%)
Change in valuation allowance	(47.32%)	(27.74%)	(22.30%)
Research and development credits	7.26%	5.29%	2.87%
Stock-based compensation	13.30%	(0.38%)	(2.58%)
Other	0.65%	(1.26%)	(0.60%)
Effective income tax rate	(1.49%)	(2.32%)	(1.56%)

Income Taxes - Schedule of Co_2

Income Taxes - Schedule of Components of Deferred Tax Assets for Federal and State Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating loss carryforwards	$ 119,093	$ 71,075
Accruals and reserves	633	183
Deferred revenue	1,489	608
Stock-based compensation	14,345	3,025
Research and development credits	25,330	14,427
Lease liabilities	4,643	5,976
Gross deferred tax assets	165,533	95,294
Valuation allowance	(151,768)	(84,065)
Total deferred tax assets	13,765	11,229
Deferred tax liabilities:
Depreciation and amortization	(4,711)	(3,539)
Deferred commissions	(4,335)	(2,862)
Right of use assets	(3,809)	(4,828)
Total deferred tax liabilities	(12,855)	(11,229)
Net deferred tax assets	$ 910	$ 0

Income Taxes - Summary of incom

Income Taxes - Summary of income tax contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Gross unrecognized tax benefits - beginning balance	$ 7,477	$ 14,099	$ 9,688
Increases related to tax positions taken during current year	4,850	2,210	4,411
Increases related to tax positions taken during prior years	220	0	0
Decreases related to tax positions during prior years	8	8,832	0
Gross unrecognzied tax benefits - ending balance	$ 12,539	$ 7,477	$ 14,099

Redeemable Convertible Prefer_3

Redeemable Convertible Preferred Stock - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Apr. 05, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares issued upon conversion		0	75,305,400
Temporary equity, shares issued (in shares)		0	75,305,400
Temporary equity, shares outstanding (in shares)		0	75,305,400
Dividend declared per share		$ 0
Dividend paid per share		$ 0
Preferred Stock, Voting Rights		The holders of Preferred Stock, voting as a single class, would be entitled to elect two members of the Board of Directors at any election of directors.
Common Stock, Voting Rights		The holders of common stock, voting as a single class, would be entitled to elect one member of the Board of Directors at any election of directors.
Proceeds from Issuance of Convertible Preferred Stock		$ 50,000
Redeemable Convertible Preferred Stock
Temporary Equity [Line Items]
Temporary equity, shares issued (in shares)		0
Temporary equity, shares outstanding (in shares)		0	75,305,400	67,658,342	58,864,178
Redeemable Convertible Preferred Stock Class A
Temporary Equity [Line Items]
Temporary equity, shares outstanding (in shares)			23,023,168
Non cumulative preferred stock dividend rate			$ 0.077
Liquidation preference per share			$ 0.9628
Redeemable Convertible Preferred Stock Class B
Temporary Equity [Line Items]
Temporary equity, shares outstanding (in shares)			12,849,539
Non cumulative preferred stock dividend rate			$ 0.3922
Liquidation preference per share			$ 4.9029
Redeemable Convertible Preferred Stock Class C
Temporary Equity [Line Items]
Temporary equity, shares outstanding (in shares)			12,091,062
Non cumulative preferred stock dividend rate			$ 0.4075
Liquidation preference per share			$ 5.0935
Redeemable Convertible Preferred Stock Class D
Temporary Equity [Line Items]
Temporary equity, shares outstanding (in shares)			10,900,409
Non cumulative preferred stock dividend rate			$ 0.60
Liquidation preference per share			$ 7.50
Redeemable Convertible Preferred Stock Class E
Temporary Equity [Line Items]
Temporary equity, shares outstanding (in shares)			8,794,164
Non cumulative preferred stock dividend rate			$ 0.96
Liquidation preference per share			$ 12
Redeemable Convertible Preferred Stock Class F
Temporary Equity [Line Items]
Temporary equity, shares outstanding (in shares)			7,647,058
Non cumulative preferred stock dividend rate			$ 1.36
Liquidation preference per share			$ 17
IPO | Common Stock
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares issued upon conversion	75,305,400
Redeemable convertible preferred stock, conversion rate	one-for-one

Redeemable Convertible Prefer_4

Redeemable Convertible Preferred Stock - Schedule of Redeemable Convertible Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021
Temporary Equity [Line Items]
Authorized	76,420,805	0
Outstanding	75,305,400	0
Issue Price	$ 0.00001	$ 0.00001
Carrying Value	$ 462,293	$ 0
Liquidation Amount	$ 464,036	$ 0
Redeemable Convertible Preferred Stock Class A
Temporary Equity [Line Items]
Issue Date	December 2011 and June 2012
Authorized	23,023,168
Outstanding	23,023,168
Issue Price	$ 0.9628
Carrying Value	$ 22,127
Liquidation Amount	$ 22,167
Redeemable Convertible Preferred Stock Class B
Temporary Equity [Line Items]
Issue Date	June 2013, July 2013, and October 201
Authorized	12,849,539
Outstanding	12,849,539
Issue Price	$ 4.9029
Carrying Value	$ 62,901
Liquidation Amount	$ 63,000
Redeemable Convertible Preferred Stock Class C
Temporary Equity [Line Items]
Issue Date	August 2015 and September 2015
Authorized	12,091,062
Outstanding	12,091,062
Issue Price	$ 5.0935
Carrying Value	$ 61,351
Liquidation Amount	$ 61,586
Redeemable Convertible Preferred Stock Class D
Temporary Equity [Line Items]
Issue Date	April 2017, June 2017, September 2017, and October 2017
Authorized	10,900,409
Outstanding	10,900,409
Issue Price	$ 7.50
Carrying Value	$ 81,482
Liquidation Amount	$ 81,753
Redeemable Convertible Preferred Stock Class E
Temporary Equity [Line Items]
Issue Date	April 2019 and July 2019
Authorized	9,166,666
Outstanding	8,794,164
Issue Price	$ 12
Carrying Value	$ 104,820
Liquidation Amount	$ 105,530
Redeemable Convertible Preferred Stock Class F
Temporary Equity [Line Items]
Issue Date	July 2020
Authorized	8,389,961
Outstanding	7,647,058
Issue Price	$ 17
Carrying Value	$ 129,612
Liquidation Amount	$ 130,000

Stockholders' Equity (Deficit_2

Stockholders' Equity (Deficit) - Additional Information (Details) - USD ($)	1 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2012	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2022	Sep. 30, 2021	Apr. 05, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Preferred stock, shares authorized (in shares)			10,000,000	0
Preferred stock, par value (in dollars per share)			$ 0.00001	$ 0.00001
Preferred stock, shares issued (in shares)			0	0			0
Preferred stock, shares outstanding (in shares)			0	0			0
Shares available for future grants			16,905,525	8,098,484
Employees percentage of eligible compensation may elect to contribute			100.00%
Shares reserved for issuance			47,293,685	119,138,892
Aggregate intrinsic value of employee options exercised			$ 296,635,000	$ 50,286,000	$ 15,788,000
cumulative stock-based compensation expense			$ 16,803,000
Intangible Assets, Gross (Excluding Goodwill)				$ 3,956,000
Weighted average period for recognition of compensation cost			2 years 2 months 8 days
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			30,456,213	111,092,492	97,288,090
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			$ 296,635,000	$ 50,286,000	$ 15,788,000
Amortized over the estimated useful life				5 years
Income tax benefits recognized			821,000
Tax benefits realized on awards vested and exercised			968,000
Internal-use Software
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
cumulative stock-based compensation expense			$ 4,890,000	$ 966,000	362,000
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Amortized over the estimated useful life			3 years
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Amortized over the estimated useful life			6 years
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation, expiration period			10 years
Vesting period			4 years
Aggregate intrinsic value of employee options exercised			$ 16,230	5,660	2,690
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			$ 16,230	5,660	2,690
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			4 years
Cliff vesting period			1 year
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value			$ 18,767,000	$ 0	$ 0
Compensation cost related to the nonvested awards not yet recognized			$ 158,875,000
Weighted average period for recognition of compensation cost			2 years 5 months 4 days
Unvested stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation cost related to the nonvested awards not yet recognized			$ 50,414,000
2013 and 2014 Executive Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future grants			0
2021 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future grants						7,095,302
Shares reserved for issuance			14,333,573
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Employees percentage of eligible compensation may elect to contribute			15.00%
Percent of the lower of the market price for Purchase shares of common stock			85.00%
Shares reserved for issuance			2,571,952			1,419,060
Compensation cost related to the nonvested awards not yet recognized			$ 15,949,000
Weighted average period for recognition of compensation cost			11 months 19 days
IPO
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Preferred stock, shares authorized (in shares)								10,000,000
Preferred stock, par value (in dollars per share)								$ 0.00001
Common Stock Warrants [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		571,250	0	0	571,250
Proceeds from Warrant Exercises		$ 200
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	190,930				190,930
Class of Warrant or Right Exercise Price of Warrants or Rights	379,070				379,070

Stockholders' Equity (Deficit )

Stockholders' Equity (Deficit )- Schedule of Stock Option Activity under the Plans (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares , Granted	663,256
Weighted- Average Exercise Price ,Granted	$ 29.99
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Beginning balance	32,458,408	28,965,640	27,748,135
Number of shares , Granted		10,054,450	8,229,541
Number of Shares, Options exercised	(8,731,889)	(4,240,315)	(4,261,484)
Number of Shares, Options canceled	(1,388,903)	(2,321,367)	(2,750,552)
Number of Shares, Ending balance	23,000,872	32,458,408	28,965,640	27,748,135
Number of Shares, Options vested	13,931,506
Weighted Average Exercise Price, Beginning balance	$ 4.60	$ 3.18	$ 2.16
Weighted- Average Exercise Price ,Granted		7.90	5.73
Weighted Average Exercise Price, Options exercised	3.70	2.42	2.09
Weighted Average Exercise Price, Canceled	5.62	5.04	2.08
Weighted Average Exercise Price, Ending balance	5.62	$ 4.60	$ 3.18	$ 2.16
Weighted Average Exercise Price, Options vested	$ 3.48
Weighted Average Remaining Contractual Term	6 years 9 months 21 days	7 years 9 months	8 years	8 years 1 month 17 days
Weighted Average Remaining Contractual Term, Options vested	5 years 10 months 28 days
Aggregate Intrinsic Value, Beginning balance	$ 625,058	$ 106,730	$ 4,574
Aggregate Intrinsic Value, Ending balance	436,630	$ 625,058	$ 106,730	$ 4,574
Aggregate Intrinsic Value, Options vested	$ 292,064

Stockholders' Equity (Deficit_3

Stockholders' Equity (Deficit) - Schedule of Share-based Compensation, Restricted Stock Units Award Activity (Details) - Restricted Stock Units - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Unvested beginning balance	3,276,600
Number of Shares, Granted	5,405,979	3,286,400
Number of Shares, Released	(502,135)
Number of Shares, Forfeited	(793,156)	(9,800)
Number of Shares, Unvested ending balance	7,387,288	3,276,600
Weighted- Average Grant Fair Value, Unvested beginning balance	$ 17.92
Weighted- Average Grant Fair Value, Granted	35.13	$ 17.91
Weighted- Average Grant Fair Value, Released	15.73
Weighted- Average Grant Fair Value, Forfeited	27.07	12.78
Weighted- Average Grant Fair Value, Unvested ending balance	$ 29.68	$ 17.92
Aggregate Intrinsic Value, Unvested balance	$ 180,545	$ 19,454

Stockholders' Equity (Deficit_4

Stockholders' Equity (Deficit) - Summary of weighted-average assumptions to record compensation expenses for stock options granted (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Fair value of common stock	$ 29.99	$ 10.30	$ 5.70
Risk-free interest rate	1.30%	0.60%	1.80%
Expected term (in years)	6 years 2 months 12 days	6 years 1 month 6 days	6 years 1 month 6 days
Expected volatility	57.10%	50.30%	46.80%
Dividend yield

Stockholders' Equity (Deficit_5

Stockholders' Equity (Deficit) - Summary of Estimated Assumptions Used in the Black-Scholes Valuation Model to Value out ESPP Purchase Rights (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	1.30%	0.60%	1.80%
Expected term (in years)	6 years 2 months 12 days	6 years 1 month 6 days	6 years 1 month 6 days
Expected volatility	57.10%	50.30%	46.80%
Dividend yield
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.03%
Expected term (in years)	5 months 26 days
Expected volatility	48.30%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.51%
Expected term (in years)	2 years 10 days
Expected volatility	61.90%

Stockholders' Equity (Deficit_6

Stockholders' Equity (Deficit) - Summary of Stock-Based Compensation Expense in the Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense	$ 91,183	$ 16,807	$ 16,317
Cost of Revenue
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense	2,092	516	491
Research and Development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense	42,783	6,960	7,038
Sales and Marketing
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense	25,992	4,097	3,189
General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense	$ 20,316	$ 5,234	$ 5,599

Stockholders' Equity (Deficit_7

Stockholders' Equity (Deficit) - Summary of Shares of Common Stock Reserved for Future Issuance (Details) - shares	Dec. 31, 2021	Dec. 31, 2020
Equity [Abstract]
Conversion of convertible preferred stock	0	75,305,400
Stock options outstanding	23,000,872	32,458,408
RSUs outstanding	7,387,288	3,276,600
Shares available for future grants	16,905,525	8,098,484
Total shares of common stock reserved	47,293,685	119,138,892

Net Loss Per Share - Calculatio

Net Loss Per Share - Calculation of Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Numerator:
Net loss attributable to common stockholders	$ (145,215)	$ (66,815)	$ (46,719)
Denominator:
Weighted average shares used in computing net loss per share attributable to common stockholders—basic and diluted (in shares)	113,587,523	37,207,492	32,276,258
Net loss per share attributable to common stockholders—basic and diluted (in dollars per share)	$ (1.28)	$ (1.80)	$ (1.45)

Net Loss Per Share - Schedule o

Net Loss Per Share - Schedule of Securities with a Potentially Dilutive Impact (Details) - shares	1 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of dilutive earnings per share (in shares)		30,456,213	111,092,492	97,288,090
Redeemable Convertible Preferred Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of dilutive earnings per share (in shares)		0	75,305,400	67,658,342
Common Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of dilutive earnings per share (in shares)		23,000,872	32,458,408	28,965,640
RSUs
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of dilutive earnings per share (in shares)		7,387,288	3,276,600	0
Common Stock Warrants
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of dilutive earnings per share (in shares)	571,250	0	0	571,250
Shares Subject to Repurchase
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of dilutive earnings per share (in shares)		2,607	52,084	92,858
ESPP
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of dilutive earnings per share (in shares)		65,446	0

Leases - Additional Information

Leases - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Leases [Abstract]
Rent expense	$ 4,786

Leases - Schedule of Components

Leases - Schedule of Components of Lease Costs (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Lease costs
Operating lease cost		$ 6,663	$ 6,856
Short term lease cost		1,122	779
Variable lease cost	[1]	1,690	1,302
Total lease costs		$ 9,475	$ 8,937
[1]	Variable lease cost is primarily related to payments made to the Company’s landlords for common area maintenance, property taxes, insurance, and other operating expenses.

Leases - Schedule of Future Lea

Leases - Schedule of Future Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
2022	$ 6,829
2023	7,668
2024	7,226
2025 and thereafter	0
Total lease payments	21,723
Less imputed interest	1,828
Present value of operating lease liabilities	19,895
Operating lease liabilities, current	8,031	$ 7,926
Operating lease liabilities, non-current	11,864	$ 18,305
Total operating lease liabilities	$ 19,895

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Cash Flow and Weighted-Average Remaining Lease Term and Discount Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental Cash Flow Information
Cash paid for amounts included in the measurement of operating lease liabilities	$ 7,683	$ 7,548
Operating lease ROU assets obtained in exchange for lease liabilities	$ 5,301	$ 5,165	$ 0
Lease Term and Discount Rate
Weighted-average remaining operating lease term (years)	2 years 11 months 1 day	3 years 10 months 13 days
Weighted-average operating lease discount rate	5.70%	5.68%

Commitments and Contingencies_2

Commitments and Contingencies (Additional Information) (Details) $ in Thousands	Dec. 31, 2021USD ($)
Commitments and Contingencies Disclosure [Abstract]
Non-cancelable purchase obligations	$ 47,644

Commitments and Contigencies -

Commitments and Contigencies - Future Minimum Payments under the Company's Non-Cancelable Purchase Obligations (Details) $ in Thousands	Dec. 31, 2021USD ($)
Commitments and Contingencies Disclosure [Abstract]
2022	$ 9,491
2023	9,611
2024	9,665
2025	8,159
2026	10,718
Thereafter	0
Purchase Obligation, Total	$ 47,644

401(k) Plan (Details)

401(k) Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Employees percentage of eligible compensation may elect to contribute	100.00%
Employer discretionary contribution amount	$ 0	$ 0	$ 0

Related Party Transaction - Add

Related Party Transaction - Additional Information (Details) - Content Sourcing Agreement - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Related party content fees	$ 6,558	$ 6,171	$ 5,876
Outstanding to educator partner payables	$ 1,502	$ 4,821

Segment and Geographic Inform_3

Segment and Geographic Information - Segment Results of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue
Revenue	$ 415,287	$ 293,511	$ 184,411
Segment gross profit
Total segment gross profit	291,434	185,299	113,967
Platform and support costs	28,014	22,833	14,861
Stock-based compensation expense	2,092	516	491
Segment amortization	2,244	1,471	542
Total reconciling items	41,965	30,634	19,145
Gross profit	249,469	154,665	94,822
Internal Use Software [Member]
Segment gross profit
Segment amortization	9,675	5,875	3,273
Acquired Intangibles [Member]
Segment gross profit
Segment amortization	2,184	1,410	520
Consumer Segment [Member]
Revenue
Revenue	246,187	192,909	121,011
Segment gross profit
Total segment gross profit	161,510	106,509	64,645
Enterprise Segment [Member]
Revenue
Revenue	120,429	70,784	48,262
Segment gross profit
Total segment gross profit	81,253	48,972	34,184
Degrees Segment [Member]
Revenue
Revenue	48,671	29,818	15,138
Segment gross profit
Total segment gross profit	$ 48,671	$ 29,818	$ 15,138

Segment and Geographic Inform_4

Segment and Geographic Information - Summary of Revenue By Region Based On Billing Address (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 415,287	$ 293,511	$ 184,411
United States
Segment Reporting Information [Line Items]
Revenue	210,513	143,478	89,951
Europe, Middle East, and Africa [Member]
Segment Reporting Information [Line Items]
Revenue	112,643	83,227	52,086
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenue	54,763	40,732	27,672
Other [Member]
Segment Reporting Information [Line Items]
Revenue	$ 37,368	$ 26,074	$ 14,702

Segment and Geographic Inform_5

Segment and Geographic Information - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Concentration risk, benchmark description	No single country other than the United States represented 10% or more of the Company’s total revenue during the years ended December 31, 2019, 2020 and 2021.
Revenue | Geographic Concentration Risk | United States | Minimum
Segment Reporting Information [Line Items]
Concentration risk, percentage	10.00%	10.00%	10.00%

Segment and Geographic Inform_6

Segment and Geographic Information - Summary of Long Lived Assets By Geographic Region (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Noncurrent Assets	$ 41,046	$ 40,266
United States
Segment Reporting Information [Line Items]
Noncurrent Assets	40,245	39,202
Rest of World [Member]
Segment Reporting Information [Line Items]
Noncurrent Assets	$ 801	$ 1,064