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Summary of Significant Accounting Policies (Details 1) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Summary of Significant Accounting Policies    
Basic EPS, income $ 3,736 $ 1,123
Effect of dilutive securities convertible preferred stock, income 65 66
Net income $ 3,801 $ 1,189
Basic EPS, shares 3,205,074 3,204,084
Effect of dilutive securities convertible preferred stock, shares 228,118 229,599
Diluted EPS, shares 3,433,192 3,433,683
Basic EPS, per shares $ 1.17 $ 0.35
Effect of dilutive securities convertible preferred stock, per shares (0.06) 0
Diluted EPS, per shares $ 1.11 $ 0.35