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Earnings Per Share Antidilutive Securities excluded from the Computaion of Earnings Per Share (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Share-based Payment Arrangement, Option [Member]        
Stock Option [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 5,000 0   0
Performance Shares [Member]        
Stock Option [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 0 0 0 0