Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Net revenue	$ 506,995	$ 676,171	$ 748,206
Costs of revenue	155,146	346,657	428,205
Gross profit	351,849	329,514	320,001
Operating Expenses [Abstract]
Compensation and benefits	397,595	446,381	361,880
Technology	60,059	55,612	52,361
Professional services	20,057	21,679	23,479
Occupancy	5,995	4,361	4,514
Depreciation and amortization	17,460	10,741	3,853
Marketing and advertising	2,986	2,566	3,995
Other operating expenses	16,780	17,975	26,513
Executive chairman long-term performance award	(144,617)	53,214	53,214
Total operating expenses	376,315	612,529	529,809
Loss from operations	(24,466)	(283,015)	(209,808)
Other income, net	52,546	52,440	24,926
Income (loss) before income tax expense	28,080	(230,575)	(184,882)
Income tax expense (benefit)	793	(7,613)	(102)
Net income (loss)	27,287	(222,962)	(184,780)
Net loss attributable to common stockholders, basic	27,287	(222,962)	(184,780)
Net loss attributable to common stockholders, diluted	27,287	(222,962)	(184,780)
Other comprehensive (loss) income, net of taxes:
Change in foreign currency translation adjustment	(468)	(40)	(167)
Net change in unrealized (loss) gain on short-term investments	(608)	8,039	(4,840)
Net other comprehensive (loss) income	(1,076)	7,999	(5,007)
Comprehensive income (loss)	$ 26,211	$ (214,963)	$ (189,787)
Net Income (loss) per share attributable to common stockholders, basic (in dollars per share)	$ 0.05	$ (0.42)	$ (0.34)
Net Income (loss) per share attributable to common stockholders, diluted (in dollars per share)	$ 0.05	$ (0.42)	$ (0.34)
Weighted-average shares used in computing net loss per share attributable to common stockholders - basic (in shares)	511,065,000	532,540,000	545,397,000
Weighted-average shares used in computing net loss per share attributable to common stockholders - diluted (in shares)	518,845,000	532,540,000	545,397,000