XML 53 R42.htm IDEA: XBRL DOCUMENT v3.5.0.2
Earnings Per Share - Additional Information (Detail) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Earnings Per Share [Abstract]        
Average number of anti-dilutive options excluded from the calculation of diluted earnings per share 0 21,959 0 21,959