Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenue	$ 67,985	$ 101,915	$ 177,205	$ 212,596
Cost and operating expenses:
Cost of revenue	5,547	6,059	11,317	12,043
Sales and marketing	58,795	87,854	149,032	184,004
Research and development	7,450	8,245	15,377	16,441
General and administrative	5,768	7,357	13,598	14,298
Restructuring and other charges	3,832		3,832
Acquisition-related costs	(37)	(3,779)	(150)	(4,671)
Total cost and operating expenses	81,355	105,736	193,006	222,115
Loss from operations	(13,370)	(3,821)	(15,801)	(9,519)
Other income (expense):
Interest income	271	37	458	45
Other income (expense), net	(16)	28	(15)	3
Total other income, net	255	65	443	48
Loss before income taxes	(13,115)	(3,756)	(15,358)	(9,471)
Income tax expense	(78)		(364)
Net loss	$ (13,193)	$ (3,756)	$ (15,722)	$ (9,471)
Net loss per share, basic	$ (0.4)	$ (0.12)	$ (0.48)	$ (0.31)
Net loss per share, diluted	$ (0.4)	$ (0.12)	$ (0.48)	$ (0.31)
Weighted average common shares outstanding, basic	33,129	31,519	32,942	31,027
Weighted average common shares outstanding, diluted	33,129	31,519	32,942	31,027
Net loss	$ (13,193)	$ (3,756)	$ (15,722)	$ (9,471)
Other comprehensive income (loss):
Foreign currency translation adjustment	14	(29)	27	(19)
Comprehensive loss	$ (13,179)	$ (3,785)	$ (15,695)	$ (9,490)