Other Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 1.6	$ 1.3	$ 1.4
Amortization expense for remainder of fiscal 2015	1.2
Amortization expense for the year 2016	1.1
Amortization expense for the year 2017	1.1
Amortization expense for the year 2018	0.7
Amortization expense for the year 2019	0.1
Amortization expense for the years 2020-2023	$ 0.1