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Net Income per Common Share - Additional Information (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Earnings Per Share [Abstract]        
Anti-dilutive securities excluded from computation of net earnings or loss per common share 42,945 607,123 0 435,998