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Net Income Per Common Share - Additional Information (Details) - shares
shares in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Restricted Stock Grants        
Antidilutive securities excluded from computation of earnings per share        
Stock awards outstanding excluded from the calculation of diluted earnings 79 0 148 0