XML 112 R97.htm IDEA: XBRL DOCUMENT v3.8.0.1
NET INCOME PER COMMON SHARE - Additional Information (Details) - shares
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Earnings Per Share [Abstract]      
Antidilutive securities excluded from calculation of diluted EPS 0 2,981 17,055