Quarterly Financial Data (Unaudited) - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended
	Oct. 31, 2014	Apr. 30, 2014	Jul. 31, 2013	Jan. 31, 2013	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Pre-tax severance and restructuring costs	$ 1,273	$ 1,278
Pre-tax gain on property insurance settlement.	1,005
Gain on sale of real estate, before tax			2,116
Unrecognized tax benefits				900	310	1,070	480
Income tax provision including discrete tax benefit				$ 1,700		$ 1,700