XML 106 R81.htm IDEA: XBRL DOCUMENT v3.6.0.2
Leases - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Oct. 31, 2016
Oct. 31, 2015
Oct. 31, 2014
Leases [Abstract]      
Rent expense for all operating leases $ 18,047 $ 15,721 $ 15,135