CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenue	$ 74,244	$ 101,332	$ 239,268	$ 306,515
Costs, expenses and other:
Cost of revenue	24,547	29,021	75,222	103,005
Sales and marketing	22,845	32,118	79,448	93,312
General and administrative	17,697	30,448	63,897	70,065
Product development	22,922	35,575	77,885	94,933
Impairment of goodwill	0	11,895	3,627	11,895
Impairment of intangibles and other assets	0	2,959	10,568	2,959
Restructuring costs	1,448	2,097	7,876	15,999
Gain on divestiture	0	0	558	(17,591)
Amortization of purchased intangible assets	823	894	2,388	2,644
Total costs, expenses and other	90,282	145,007	321,469	377,221
(Loss) income from operations	(16,038)	(43,675)	(82,201)	(70,706)
Other income (expense), net:
Interest (expense) income, net	(4,147)	1,068	(3,652)	3,005
Gain on debt extinguishment	0	0	73,083	7,200
Other (expense) income, net	(7,615)	(10,164)	(7,246)	2,191
Total other (expense) income	(11,762)	(9,096)	62,185	12,396
Income (loss) before provision for (benefit from) income taxes	(27,800)	(52,771)	(20,016)	(58,310)
Provision for (benefit from) income taxes	509	541	2,129	1,600
Net loss	$ (28,309)	$ (53,312)	$ (22,145)	$ (59,910)
Net loss per share of common stock:
Basic (in dollars per share)	$ (0.32)	$ (0.68)	$ (0.25)	$ (0.78)
Diluted (in dollars per share)	$ (0.32)	$ (0.68)	$ (0.25)	$ (0.78)
Weighted average shares outstanding:
Basic (in shares)	89,515,111	78,005,210	88,773,677	76,902,316
Diluted (in shares)	89,515,111	78,005,210	88,773,677	76,902,316