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Earnings Per Share (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Effect of dilutive shares (in shares) 7,409,508 7,511,989
Stock Option Plans    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive share options (in shares) 952,823 717,492