Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Revenues	$ 5,140	$ 10,338	$ 10,938	$ 21,268
Cost of revenues (including depreciation of $4, $13, $11, and $27 in the three and six months ended June 30, 2024 and 2023, respectively)	1,607	2,589	3,595	5,871
Gross profit	3,533	7,749	7,343	15,397
Operating expenses:
Selling and marketing	2,529	2,628	5,143	6,182
Research and development	3,702	3,705	7,691	9,573
General and administrative	2,740	3,040	5,496	6,515
Depreciation and amortization	1,541	1,620	3,449	3,305
Goodwill impairment	0	0	23,989	0
Total operating expenses	10,512	10,993	45,768	25,575
Operating loss	(6,979)	(3,244)	(38,425)	(10,178)
Other income (expense):
Change in fair value of warrant and derivative liabilities	42	429	227	3,413
Loss on derecognition of debt	0	(775)	0	(1,402)
Interest income (expense), net	26	(2,037)	100	(4,297)
Other (expense) income, net	(18)	(36)	201	(76)
Loss before provision for income taxes	(6,929)	(5,663)	(37,897)	(12,540)
Provision for income tax expense	0	2	39	11
Net loss	$ (6,929)	$ (5,665)	$ (37,936)	$ (12,551)
Loss per share:
Basic (in dollars per share)	$ (0.66)	$ (0.73)	$ (3.79)	$ (1.68)
Diluted (in dollars per share)	$ (0.66)	$ (0.73)	$ (3.79)	$ (1.68)
Weighted average shares outstanding:
Basic (in shares)	10,567	7,807	10,016	7,466
Diluted (in shares)	10,567	7,807	10,016	7,466