CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue	$ 17,037	$ 23,704	$ 55,271	$ 71,263
Cost of goods sold	8,092	8,789	25,291	26,884
Gross profit	8,945	14,915	29,980	44,379
Selling, general and administrative expenses	11,032	24,299	48,646	73,263
Asset impairment	1,822	0	1,822	0
Operating loss	(3,909)	(9,384)	(20,488)	(28,884)
Other income, net	321	110	304	320
Change in fair value of financial instruments and other	(4,000)	8,459	(3,900)	9,082
Loss before provision for income taxes	(7,588)	(815)	(24,084)	(19,482)
Income tax benefit	0	38	0	8
Net loss	$ (7,588)	$ (777)	$ (24,084)	$ (19,474)
Net loss per common share, basic (in usd per share)	$ (0.05)	$ (0.01)	$ (0.17)	$ (0.14)
Net loss per common share, diluted (in usd per share)	$ (0.05)	$ (0.01)	$ (0.17)	$ (0.14)
Weighted-average shares used in computing net loss per share, basic (in shares)	145,334,992	140,521,244	145,203,515	140,054,738
Weighted-average shares used in computing net loss per share, diluted (in shares)	145,334,992	140,521,244	145,203,515	140,054,738