Company's Interest Rate Swap Contract on Consolidated Financial Statements (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Interest Expense
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	$ (164)	$ (436)
Interest Rate Swap
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Amount of gain or (loss) recognized in AOCI on derivative	$ (125)	$ (245)