CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Trade accounts receivable, less allowances	$ 33	$ 15
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	876,447	876,447
Preferred stock, outstanding (in shares)	876,447	876,447
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	50,000,000	50,000,000
Common stock, issued (in shares)	6,306,433	5,260,741
Common stock, outstanding (in shares)	6,306,433	5,260,741
Convertible Preferred Stock
Preferred stock, authorized (in shares)	3,300,000	3,300,000