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Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Share-Based Payment Arrangement, Employee [Member]
Common Stock [Member]
Share-Based Payment Arrangement, Employee [Member]
Additional Paid-in Capital [Member]
Share-Based Payment Arrangement, Employee [Member]
Retained Earnings [Member]
Share-Based Payment Arrangement, Employee [Member]
Director [Member]
Common Stock [Member]
Director [Member]
Additional Paid-in Capital [Member]
Director [Member]
Retained Earnings [Member]
Director [Member]
Vendor [Member]
Common Stock [Member]
Vendor [Member]
Additional Paid-in Capital [Member]
Vendor [Member]
Retained Earnings [Member]
Vendor [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2021                         4,002,843      
Balance at Dec. 31, 2021                         $ 40 $ 60,943 $ (52,254) $ 8,729
Stock-based compensation (in shares) 0                              
Stock-based compensation $ 0 $ 551 $ 0 $ 551                        
Stock-based compensation $ 0 551 0 551                        
Shares issued to employees pursuant to the Retention Bonus Plan (in shares)                         833,334      
Shares issued to employees pursuant to the Retention Bonus Plan                         $ 8 4,992 0 5,000
Net (loss) income                         $ 0 0 2,502 2,502
Shares issued and warrants exercised in private investment in public entity ("PIPE") (in shares)                         2,388,835      
Shares issued and warrants exercised in private investment in public entity ("PIPE")                         $ 24 2,254 0 2,278
Warrant repricing events                         $ 0 31 (31) 0
Balance (in shares) at Mar. 31, 2022                         7,225,012      
Balance at Mar. 31, 2022                         $ 72 68,771 (49,783) 19,060
Balance (in shares) at Dec. 31, 2022                         7,266,382      
Balance at Dec. 31, 2022                         $ 72 75,916 (50,409) 25,579
Stock-based compensation (in shares) 0       51,616       13,934              
Stock-based compensation $ 0 243 0 243 $ 1 $ 95 $ 0 $ 96 $ 0 $ 25 $ 0 $ 25        
Stock-based compensation $ 0 $ 243 $ 0 $ 243 $ 1 $ 95 $ 0 $ 96 $ 0 $ 25 $ 0 $ 25        
Shares issued to employees pursuant to the Retention Bonus Plan (in shares)                         62,475      
Shares issued to employees pursuant to the Retention Bonus Plan                         $ 1 138 0 139
Net (loss) income                         $ 0 0 (1,000) (1,000)
Balance (in shares) at Mar. 31, 2023                         7,394,407      
Balance at Mar. 31, 2023                         $ 74 $ 76,417 $ (51,409) $ 25,082