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Earnings applicable to common stock and common stock shares used in the calculation of basic and diluted earnings per share are as follows: (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2023
Sep. 30, 2022
Numerator: (in Thousands)                
Net loss $ (1,436) $ 333 $ (1,159) $ (750) $ 50 $ 62 $ (2,262) $ (638)
Denominator:                
Weighted average number of basic shares outstanding 49,598,581     49,174,673     49,532,395 49,068,709
Weighted average additional shares assuming conversion of in-the-money stock options to common shares and assumed repurchase of common shares by the Company        
Weighted average number of diluted common shares outstanding 49,598,581     49,174,673     49,532,395 49,068,709
Basic earnings per common share:                
Net loss per share – basic $ (0.03)     $ (0.02)     $ (0.05) $ (0.01)
Diluted earnings per common share:                
Net loss per share – diluted $ (0.03)     $ (0.02)     $ (0.05) $ (0.01)