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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Basic and diluted earnings    
Net income (loss) $ 142 $ (43)
Less: Preferred stock dividends (100) 0
Net income (loss) applicable to common stockholders $ 42 $ (43)
Weighted average common shares outstanding - basic 6,602,000 6,601,000
Dilutive potential common shares from stock options, restricted stock units, and convertible preferred stock 0 0
Weighted average common shares outstanding - diluted 6,602,000 6,601,000
Earnings per share:    
Earnings (loss) per common share, basic $ 0.01 $ (0.01)
Earnings (loss) per common share, diluted $ 0.01 $ (0.01)
Shares subject to anti-dilutive stock options and restricted stock units excluded from calculation 0 0
Shares subject to anti-dilutive Series A Convertible Preferred Stock excluded from calculation 0 0
Series A Convertible Preferred Stock    
Earnings per share:    
Shares subject to anti-dilutive stock options and restricted stock units excluded from calculation 400,000 400,000
Shares subject to anti-dilutive Series A Convertible Preferred Stock excluded from calculation 400,000 400,000