Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Net revenue	$ 89,103	$ 81,616	$ 180,002	$ 162,343
Costs and expenses:
Cost of net revenue, exclusive of depreciation and amortization	14,969	12,746	30,000	25,716
Operations and support	15,904	12,969	31,257	27,863
Research and development	18,212	12,449	34,268	31,249
Marketing	44,146	32,574	86,993	67,823
General and administrative	17,772	12,436	32,808	30,588
Depreciation and amortization	1,013	846	2,033	1,636
Total costs and expenses	112,016	84,020	217,359	184,875
Loss from operations	(22,913)	(2,404)	(37,357)	(22,532)
Interest income	508	38	559	124
Other (expense) income, net
Change in fair value of redeemable convertible preferred stock warrant liability	0	0	0	(2,816)
Change in fair value of the convertible notes	0	0	0	(49,481)
Loss on extinguishment of the convertible notes	0	0	0	(1,620)
Change in fair value of contingent consideration	(4)	0	433	0
Other, net	(341)	(142)	(275)	(184)
Other expenses, net	(345)	(142)	158	(54,101)
Loss before provision for income taxes	(22,750)	(2,508)	(36,640)	(76,509)
Provision for income taxes	129	40	261	180
Net loss	$ (22,879)	$ (2,548)	$ (36,901)	$ (76,689)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.29)	$ (0.03)	$ (0.47)	$ (1.11)
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted	78,210	75,709	77,895	69,219