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Earnings (loss) per Share (Details) - shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Denominator:      
Weighted average common shares for basic earnings per share 16,433,644 16,389,876 16,269,611
Effect of dilutive securities 119,222 133,723
Denominator for diluted earnings per share 16,552,866 16,523,599 16,269,611