XML 60 R47.htm IDEA: XBRL DOCUMENT v3.3.1.900
Earnings Per Share - Additional Information (Detail) - shares
shares in Thousands
3 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Earnings Per Share [Abstract]    
Options to purchase shares of common stock excluded in the computation of diluted earnings per share because their inclusion would be antidilutive, shares 15 493