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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 6 Months Ended
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Numerator: (in Thousands)            
Net income $ 50 $ 62 $ 41 $ 1,310 $ 112 $ 1,351
Denominator:            
Weighted average number of basic shares outstanding 49,045,047   44,367,496   49,014,847 41,294,394
Weighted average additional shares assuming conversion of in-the-money stock options to common shares 1,963,000   1,995,000   1,976,000 1,784,000
Weighted average number of diluted common shares outstanding 51,008,047   46,362,496   50,990,847 43,078,394
Basic earnings per common share:            
Net income per share – basic $ 0.00   $ 0.00   $ 0.00 $ 0.03
Diluted earnings per common share:            
Net income per share – diluted $ 0.00   $ 0.00   $ 0.00 $ 0.03