Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Revenue	$ 295,203	$ 275,556	$ 520,682	$ 489,639
Cost of revenue	185,617	175,366	340,284	331,311
Gross profit	109,586	100,190	180,398	158,328
Operating expenses
Technology and development	42,215	47,141	88,644	94,804
Marketing	40,260	33,033	65,138	73,436
General and administrative	54,705	61,765	122,578	131,204
Restructuring and reorganization	1,334	6,106	2,223	7,159
Total operating expenses	138,514	148,045	278,583	306,603
Loss from continuing operations	(28,928)	(47,855)	(98,185)	(148,275)
Interest income	1,461	2,704	3,293	6,110
Interest expense	(6,086)	(1,766)	(10,960)	(3,688)
Income tax expense	(559)	(233)	(387)	(643)
Gain on extinguishment of convertible senior notes	6,314	20,083	12,000	62,353
Other expense, net	(82)	(145)	(415)	(379)
Net loss from continuing operations	(27,880)	(27,212)	(94,654)	(84,522)
Net loss from discontinued operations	0	(146)	0	(3,634)
Net loss	(27,880)	(27,358)	(94,654)	(88,156)
Dividends on convertible preferred stock	(191)	(297)	(424)	(523)
Net loss from continuing operations per share attributable to common stock—basic and diluted	$ (28,071)	$ (27,509)	$ (95,078)	$ (85,045)
Net loss per share attributable to common stock - basic (in dollars per share)	$ (0.23)	$ (0.25)	$ (0.80)	$ (0.77)
Income (Loss) from Continuing Operations, Per Diluted Share	$ (0.23)	$ (0.25)	$ (0.80)	$ (0.77)
Net loss attributable to common stock - basic	$ (28,071)	$ (27,655)	$ (95,078)	$ (88,679)
Net loss per share attributable to common stock - basic (in dollars per share)	$ (0.23)	$ (0.25)	$ (0.80)	$ (0.80)
Net loss per share attributable to common stock - diluted (in dollars per share)	$ (0.23)	$ (0.25)	$ (0.80)	$ (0.80)
Weighted average shares - basic (in shares)	120,393,897	111,678,417	119,379,082	110,895,358
Weighted-average shares to compute net loss per share attributable to common stock—basic and diluted	120,393,897	111,678,417	119,379,082	110,895,358
Other comprehensive income (loss)
Foreign currency translation adjustments	$ 1	$ 0	$ (2)	$ (58)
Unrealized (loss) gain on available-for-sale debt securities	0	(17)	40	407
Comprehensive loss	$ (27,879)	$ (27,375)	$ (94,616)	$ (87,807)