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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Trade accounts receivable, less allowances $ 13 $ 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) 5,364,368 5,260,741
Common stock, outstanding (in shares) 5,364,368 5,260,741
Series A Convertible Preferred Stock    
Preferred stock, authorized (in shares) 3,300,000 3,300,000