Condensed Consolidated Statements of Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenues	$ 43,533	$ 65,105
Costs and operating expenses:
Cost of revenue (exclusive of depreciation and amortization presented separately below)	4,946	5,458
Sales and marketing	27,081	40,099
Technology and development	10,255	11,193
General and administrative	11,724	12,678
Depreciation and amortization	3,660	4,312
Total costs and operating expenses	57,666	73,740
Loss from operations	(14,133)	(8,635)
Interest income	27	15
Other income	0	625
Gain (loss) from equity method investment	1,749	(329)
Loss before income taxes	(12,357)	(8,324)
Provision for income taxes	57	94
Net loss	$ (12,414)	$ (8,418)
Net loss per share, basic and diluted
Continuing operations, basic (in dollars per share)	$ (0.13)	$ (0.09)
Continuing operations, diluted (in dollars per share)	$ (0.13)	$ (0.09)
Weighted average common shares outstanding, basic (in shares)	95,924	98,581
Weighted average common shares outstanding, diluted (in shares)	95,924	98,581
Other comprehensive loss:
Comprehensive loss	$ (12,414)	$ (8,418)