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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Basic and diluted earnings    
Net income (loss) $ (734) $ 113
Less: Preferred stock dividends (48)  
Net income (loss) applicable to common stockholders $ (782) $ 113
Weighted average common shares outstanding - basic 6,601,000 6,586,000
Dilutive potential common shares from stock options, restricted stock units, and convertible preferred stock   13
Weighted average common shares outstanding - diluted 6,601,000 6,599,000
Earnings per share:    
Earnings (loss) per common share, basic $ (0.12) $ 0.02
Earnings (loss) per common share, diluted $ (0.12) $ 0.02
Shares subject to anti-dilutive stock options and restricted stock units excluded from calculation 400 3
Shares subject to anti-dilutive Series A Convertible Preferred Stock excluded from calculation 400 3