CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Net sales		$ 833	$ 930
Cost of sales		713	913
Gross profit		120	17
Operating expenses:
Product development		128	154
Selling, general, and administrative		591	1,066
Total operating expenses		719	1,220
Loss from operations		(599)	(1,203)
Other expenses (income):
Interest expense		5	123
Gain on debt extinguishment		(187)	0
Other expenses		1	7
Net loss		$ (418)	$ (1,333)
Net loss per common share - basic and diluted
Net loss, basic (in dollars per share)		$ (0.09)	$ (0.58)
Net loss, diluted (in dollars per share)		$ (0.09)	$ (0.58)
Weighted average shares of common stock outstanding:
Basic (in shares)	[1]	4,433	2,310
Diluted (in shares)	[1]	4,433	2,310

[1] Shares outstanding for prior periods have been restated for the 1-for-7 reverse stock split effective June 16, 2023.