Consolidated Statements of Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Revenues	$ 158,706	$ 161,524	$ 231,698
Costs and operating expenses:
Cost of revenue (exclusive of depreciation and amortization presented separately below)	15,856	16,213	22,239
Sales and marketing	99,050	104,534	136,479
Technology and development	42,247	46,090	41,432
General and administrative	40,321	44,087	48,747
Depreciation and amortization	17,699	16,520	16,279
Goodwill impairment	0	59,775	0
Total costs and operating expenses	215,173	287,219	265,176
Loss from operations	(56,467)	(125,695)	(33,478)
Interest income	6,718	2,565	52
Other income	0	40	667
Gain (loss) from equity method investment	0	1,845	(5,404)
Loss from continuing operations before income taxes	(49,749)	(121,245)	(38,163)
Provision for (benefit from) income taxes	17	(2,560)	206
Loss from continuing operations	(49,766)	(118,685)	(38,369)
Income from discontinued operations, net of taxes	0	0	40
Net loss	$ (49,766)	$ (118,685)	$ (38,329)
Net loss per share, basic and diluted
Continuing operations, basic (in dollars per share)	$ (0.55)	$ (1.30)	$ (0.39)
Continuing operations, diluted (in dollars per share)	(0.55)	(1.30)	(0.39)
Discontinued operations, basic (in dollars per share)	0	0	0
Discontinued operations, diluted (in dollars per share)	$ 0	$ 0	$ 0
Weighted average common shares outstanding, basic (in shares)	89,766	91,452	97,352
Weighted average common shares outstanding, diluted (in shares)	89,766	91,452	97,352
Other comprehensive loss:
Comprehensive loss	$ (49,766)	$ (118,685)	$ (38,329)