Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenues	$ 4,648	$ 11,001	$ 15,585	$ 32,269
Cost of revenues (including depreciation of $3, $12, $14, and $40 in the three and nine months ended September 30, 2024 and 2023, respectively)	1,321	2,528	4,915	8,400
Gross profit	3,327	8,473	10,670	23,869
Operating expenses:
Selling and marketing	2,060	2,449	7,202	8,631
Research and development	3,637	3,704	11,328	13,276
General and administrative	2,715	2,934	8,213	9,448
Depreciation and amortization	1,422	1,567	4,872	4,872
Goodwill impairment	0	0	23,989	0
Total operating expenses	9,834	10,654	55,604	36,227
Operating loss	(6,507)	(2,181)	(44,934)	(12,358)
Other income (expense):
Change in fair value of warrant and derivative liabilities	221	73	448	3,486
Loss on derecognition of debt	0	(1,583)	0	(2,985)
Interest (expense) income, net	(12)	(1,443)	89	(5,740)
Other (expense) income, net	(71)	15	130	(62)
Loss before provision for income taxes	(6,369)	(5,119)	(44,267)	(17,659)
Provision for income tax expense	0	14	39	25
Net loss	$ (6,369)	$ (5,133)	$ (44,306)	$ (17,684)
Loss per share:
Basic (in dollars per share)	$ (0.54)	$ (0.61)	$ (4.17)	$ (2.27)
Diluted (in dollars per share)	$ (0.54)	$ (0.61)	$ (4.17)	$ (2.27)
Weighted average shares outstanding:
Basic (in shares)	11,832	8,419	10,626	7,787
Diluted (in shares)	11,832	8,419	10,626	7,787