XML 72 R59.htm IDEA: XBRL DOCUMENT v3.8.0.1
EARNINGS PER SHARE - Additional Information (Detail) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Earnings Per Share [Abstract]        
Shares excluded from diluted earnings per share that may be issued upon the exercise of employee stock options because such effect would be antidilutive 0 100,000 200,000 200,000