Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenues	$ 11,699	$ 16,443	$ 37,108	$ 43,743
Cost of revenues	3,629	3,692	10,882	8,595
Gross profit	8,070	12,751	26,226	35,148
Operating expenses:
Selling and marketing	2,986	3,067	9,692	8,428
Research and development	7,523	7,123	23,139	19,060
General and administrative	4,333	5,143	12,406	13,746
Change in fair value of contingent consideration	0	12,864	0	12,864
Amortization of intangible assets	1,545	3,015	4,766	7,958
Total operating expenses	16,387	31,212	50,003	62,056
Operating loss	(8,317)	(18,461)	(23,777)	(26,908)
Other income (expense):
Change in fair value of warrant and derivative liabilities	(3,457)	0	(3,457)	0
Interest (expense) income, net	(896)	1	(898)	25
Other (expense) income, net	(29)	(2)	(12)	7
Loss before provision for income taxes	(5,785)	(18,462)	(21,230)	(26,876)
Provision for income tax expense	27	145	77	159
Net loss	$ (5,812)	$ (18,607)	$ (21,307)	$ (27,035)
Loss per share:
Basic (in dollars per share)	$ (0.10)	$ (0.34)	$ (0.39)	$ (0.54)
Diluted (in dollars per share)	$ (0.10)	$ (0.34)	$ (0.39)	$ (0.54)
Weighted average shares outstanding:
Basic (in shares)	55,722	53,939	55,140	50,147
Diluted (in shares)	55,722	53,939	55,140	50,147