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Income Per Common Share - Additional Information (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2019
Stock Compensation Plan    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from earnings per share computation (in shares) 1,452 1,825,276
Employee Stock Option    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from earnings per share computation (in shares) 352,000 2,298,296
Warrant    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from earnings per share computation (in shares) 152,266 152,266