Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net loss	$ (70,279)	$ (55,029)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	11,886	10,200
Amortization of deferred sales commissions	21,829	13,965
Stock-based compensation	49,444	28,074
Allowance for credit losses	1,011	517
Accretion of marketable securities	(3,431)	0
Non-cash operating lease expense	3,012	3,101
Unrealized loss on strategic investments	1,793	0
Other	633	252
Changes in operating assets and liabilities:
Accounts receivable	16,524	3,356
Prepaid expenses and other assets	505	1,243
Deferred contract costs	(30,036)	(27,381)
Accounts payable, accrued expenses and other liabilities	(14,899)	(22,034)
Content costs payable	(206)	(2,652)
Operating lease liabilities	(3,436)	(3,146)
Deferred revenue	9,246	33,099
Net cash used in operating activities	(6,404)	(16,435)
Cash flows from investing activities:
Purchases of marketable securities	(125,968)	0
Proceeds from maturities of marketable securities	139,000	0
Purchases of property and equipment	(243)	(699)
Capitalized software costs	(6,385)	(6,643)
Purchases of strategic investments	0	(5,000)
Net cash provided by (used in) investing activities	6,404	(12,342)
Cash flows from financing activities:
Net proceeds from exercise of stock options	4,710	3,831
Proceeds from share purchases under employee stock purchase plan	4,757	5,563
Payment of deferred offering costs	0	(1,586)
Net cash provided by financing activities	9,467	7,808
Effect of foreign exchange rates on cash flows	(25)	(4)
Net increase (decrease) in cash, cash equivalents and restricted cash	9,442	(20,973)
Cash, cash equivalents and restricted cash—Beginning of period	317,314	536,768
Cash, cash equivalents and restricted cash—End of period	326,756	515,795
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	323,227	512,166
Restricted cash, non-current	3,529	3,629
Total cash, cash equivalents and restricted cash	326,756	515,795
Supplemental disclosures of cash flow information:
Interest paid	568	10
Income taxes paid	990	388
Supplemental disclosure of non-cash investing and financing activities:
Stock-based compensation in capitalized costs	4,768	2,646
Change in unrealized loss on marketable securities	$ 202	$ 0