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Earnings Per Share - Dilutive Earnings Per Share (Details) - shares
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Earnings Per Share Basic And Diluted [Line Items]    
Basic (in shares) 18,870,398 18,562,073
Diluted (in shares) 18,870,398 18,562,763
Warrant    
Earnings Per Share Basic And Diluted [Line Items]    
Effect of exercise of options and Warrants (in shares) 0 690