Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 5,095	$ 3,800
Accounts receivable	1,727	1,951
Inventories, net	1,718	1,997
Other current assets	315	461
Total current assets	8,855	8,209
Property, plant and equipment, net	478	728
Operating lease right-of-use asset	510	713
Other assets	21	120
TOTAL ASSETS	9,864	9,770
Current liabilities
Accounts payable and accrued liabilities	1,640	2,380
Accrued compensation	640	525
Current portion of operating lease liability	238	216
Other current liabilities	41	51
Total current liabilities	2,559	3,172
Common stock warrant liability	468	2,843
Operating lease liability	307	544
Total liabilities	3,334	6,559
Commitments and contingencies
Mezzanine Equity
Series J Convertible Preferred Stock as of December 31, 2024 and December 31, 2023, par value $0.0001 per share; authorized 600,000 shares, issued and outstanding 102 and 11,950, respectively	2	221
Stockholders' equity
Preferred stock	0	0
Common stock as of December 31, 2024 and December 31, 2023, par value $0.0001 per share; authorized 100,000,000 shares, issued and outstanding 4,373,968 and 161,925, respectively	0	0
Additional paid-in capital	305,366	290,647
Accumulated other comprehensive income:
Foreign currency translation adjustment	(47)	(31)
Accumulated deficit	(298,791)	(287,626)
Total stockholders' equity	6,528	2,990
TOTAL LIABILITIES, CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY	9,864	9,770
Series A Junior Participating Preferred Stock [Member]
Stockholders' equity
Preferred stock	0	0
Series F Convertible Preferred Stock [Member]
Stockholders' equity
Preferred stock	$ 0	$ 0