Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Consolidated Statements of Operations
Revenue	$ 192,433	$ 72,299	$ 77,595
Operating expenses(1):
Cost of revenue	58,725	17,562	21,500
Selling and marketing	84,273	41,665	56,220
Product and technology	47,005	28,546	30,992
General and administrative	85,795	28,199	52,011
Gain on divestiture of businesses		(1,442)	4,994
Total operating expenses	275,798	114,530	165,717
Operating loss	(83,365)	(42,231)	(88,122)
Other income (expense):
Interest expense	(5,757)	(14,734)	(7,134)
Change in fair value of earnout liability	(18,519)
Change in fair value of private warrant liability	(15,389)	2,427
Gain (loss) on extinguishment of debt	5,110	5,748	(483)
Investment income and realized gains, net of investment expenses	701
Other income (expense), net	340	(6,931)	(7,484)
Total other income (expense)	(33,514)	(13,490)	(15,101)
Loss before income taxes	(116,879)	(55,721)	(103,223)
Income tax benefit (expense)	10,273	1,689	(96)
Net loss	106,606	54,032	103,319
Induced conversion of preferred stock		(17,284)
Net loss attributable to common stockholders	$ (106,606)	$ (71,316)	$ (103,319)
Net loss attributable per share to common stockholders:
Loss per share - basic (in dollars per share)	$ (1.14)	$ (1.96)	$ (3.31)
Loss per share diluted (in dollars per share)	$ (1.14)	$ (2.03)	$ (3.31)
Weighted-average shares used in computing net loss attributable per share to common stockholders:
Shares used in computing basic loss per share	93,884,566	36,344,234	31,170,351
Shares used in computing diluted loss per share	93,884,566	36,374,215	31,170,351