Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net loss	$ (123,640)	$ (97,477)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	13,507	10,508
Stock-based compensation expense	75,853	67,867
Amortization or accretion of marketable securities	1,046	373
Impairment of long-lived assets	6,124	0
Other	1,070	257
Changes in operating assets and liabilities:
Accounts receivable, net	(21,059)	4,500
Prepaid expenses and other assets	(19,454)	(5,658)
Operating lease right-of-use assets	3,655	4,052
Accounts payable and accrued expenses	18,232	(58)
Accrued compensation and other liabilities	(4,498)	7,274
Operating lease liabilities	(4,788)	(4,801)
Deferred revenue	21,343	14,104
Net cash (used in) provided by operating activities	(32,609)	941
Cash flows from investing activities:
Purchases of marketable securities	(287,639)	0
Proceeds from maturities of marketable securities	165,000	189,981
Purchases of property, equipment, and software	(1,386)	(1,228)
Capitalized internal-use software costs	(10,082)	(9,712)
Net cash (used in) provided by investing activities	(135,402)	178,272
Cash flows from financing activities:
Proceeds from exercise of stock options	14,641	26,810
Proceeds from employee stock purchase plan	4,596	0
Proceeds from initial public offering, net of offering costs	0	525,284
Payment of deferred offering costs	(295)	(6,119)
Payment of tax withholding on vesting of restricted stock units	(6,793)	(3,992)
Net cash provided by financing activities	12,149	541,983
Net (decrease) increase in cash, cash equivalents, and restricted cash	(155,862)	721,196
Cash, cash equivalents, and restricted cash—Beginning of period	582,719	82,426
Cash, cash equivalents, and restricted cash—End of period	426,857	803,622
Reconciliation of cash, cash equivalents, and restricted cash:
Cash and cash equivalents	424,796	801,074
Restricted cash	2,061	2,548
Total cash, cash equivalents, and restricted cash	426,857	803,622
Supplemental disclosure of cash flow information:
Cash paid for income taxes	2,622	1,456
Supplemental disclosure of noncash investing and financing activities:
Stock-based compensation capitalized as internal-use software costs	4,486	3,813
Content Asset
Cash flows from investing activities:
Purchases of content assets	$ (1,295)	$ (769)