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Earnings Per Share (Narrative) (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Earnings Per Share [Abstract]        
Increase in number of shares to diluted shares calculation if income would have been generated 69,042 4,001 52,925 41,705