XML 118 R99.htm IDEA: XBRL DOCUMENT v3.19.2
EARNINGS PER COMMON SHARE - Average Shares Excluded from Earnings Per Common Share (Detail) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Earnings Per Share [Abstract]        
Average shares excluded from the diluted earnings per common share calculation 0 72 6 46