XML 95 R85.htm IDEA: XBRL DOCUMENT v3.10.0.1
Earnings Per Share - Schedule of Shares not Considered in Computing Diluted Earnings per Common Share (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Restricted Stock Awards        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive shares   35,270   35,270
Stock Options        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive shares 51,952 58,442 51,952 58,442
Performance Stock Units        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive shares 59,658   59,658