Consolidated Statements of Comprehensive Loss - 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	$ 278,015	$ 268,956	$ 798,697	$ 758,595
Cost of revenue	176,152	170,616	516,436	501,927
Gross profit	101,863	98,340	282,261	256,668
Operating expenses
Technology and development	40,332	44,392	128,976	139,196
Marketing	27,186	24,095	92,324	97,531
General and administrative	58,788	55,380	181,366	186,584
Restructuring and reorganization	2,509	0	4,732	7,159
Total operating expenses	128,815	123,867	407,398	430,470
Loss from continuing operations	(26,952)	(25,527)	(125,137)	(173,802)
Interest income	1,839	2,060	5,132	8,170
Interest expense	(8,537)	(1,603)	(19,497)	(5,291)
Income tax expense	12	(239)	(375)	(882)
Gain on extinguishment of convertible senior notes	0	6,495	12,000	68,848
Other expense, net	(144)	(158)	(559)	(537)
Net loss from continuing operations	(33,782)	(18,972)	(128,436)	(103,494)
Net loss from discontinued operations	0	0	0	(3,634)
Net loss	(33,782)	(18,972)	(128,436)	(107,128)
Dividends on convertible preferred stock	(282)	(335)	(706)	(858)
Net loss from continuing operations attributable to common stock—basic and diluted	(34,064)	(19,307)	(129,142)	(104,352)
Net loss attributable to common stock - diluted	(34,064)	(19,307)	(129,142)	(107,986)
Net loss attributable to common stock - basic	$ (34,064)	$ (19,307)	$ (129,142)	$ (107,986)
Net loss per share attributable to common stock - basic (in dollars per share)	$ (0.28)	$ (0.17)	$ (1.07)	$ (0.93)
Income (Loss) from Continuing Operations, Per Diluted Share	(0.28)	(0.17)	(1.07)	(0.93)
Net loss per share attributable to common stock - basic (in dollars per share)	(0.28)	(0.17)	(1.07)	(0.96)
Net loss per share attributable to common stock - diluted (in dollars per share)	$ (0.28)	$ (0.17)	$ (1.07)	$ (0.96)
Weighted average shares - basic (in shares)	122,876,102	114,592,679	120,553,264	112,141,342
Weighted-average shares to compute net loss per share attributable to common stock—basic and diluted	122,876,102	114,592,679	120,553,264	112,141,342
Other comprehensive income
Foreign currency translation adjustments	$ 4	$ (15)	$ 2	$ (73)
Unrealized gain on available-for-sale debt securities	0	210	40	617
Comprehensive loss	(33,778)	(18,777)	(128,394)	(106,584)
Net Income (Loss) from Continuing Operations Available to Common Shareholders, Diluted	$ (34,064)	$ (19,307)	$ (129,142)	$ (104,352)