XML 93 R79.htm IDEA: XBRL DOCUMENT v3.19.1
Earnings Per Common Share (EPS) (Narrative) (Details) - shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Earnings Per Common Share (EPS) [Abstract]    
Options excluded from calculating diluted EPS because their effect was anti-dilutive 0 0