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Earnings Per Common Share (EPS) (Narrative) (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Earnings Per Common Share (EPS) [Abstract]        
Options excluded from calculating diluted EPS because their effect was anti-dilutive 0 0 0 0