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Earnings per Common Share - Calculation of Weighted-Average Shares Excluded from Diluted EPS (Details) - shares
shares in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Stock awards        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Weighted-average stock awards excluded from diluted EPS due to the anti-dilutive effect calculated using the treasury stock method (shares) 0 14 942 948