Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Consolidated Statements of Operations and Comprehensive Loss [Abstract]
Net sales	$ 8,740	$ 8,864
Cost of goods sold	3,064	3,881
Gross profit	5,676	4,983
Operating expenses:
Selling, general and administrative	13,455	17,191
Research and development	3,209	5,422
Total operating expenses	16,664	22,613
Loss from operations	(10,988)	(17,630)
Other income (expense), net
Other income (expense)	(80)	154
Gain on settlement	900	0
Financing expense	(5,607)	(3,483)
Change in fair value of warrant liability	4,615	758
Loss before income taxes	(11,160)	(20,201)
Income tax expense	(5)	(8)
Net loss	(11,165)	(20,209)
Deemed dividend attributable to Series J Convertible Preferred Stock	541	(2,297)
Dividend on Series J Convertible Preferred Stock	0	(121)
Net loss attributable to common stockholders	$ (10,624)	$ (22,627)
Basic loss per share (in dollars per share)	$ (8.41)	$ (360.06)
Diluted loss per share (in dollars per share)	$ (8.41)	$ (360.06)
Weighted average shares outstanding - basic (in shares)	1,327,252	56,126
Weighted average shares outstanding - diluted (in shares)	1,327,252	56,126
Other comprehensive loss:
Net loss	$ (11,165)	$ (20,209)
Unrealized loss on marketable securities	0	(56)
Unrealized foreign currency translation adjustment	(16)	(13)
Total comprehensive loss	$ (11,181)	$ (20,278)