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Discontinued Operations - Components of Major Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2014
Assets:  
Inventories $ 19,659us-gaap_DisposalGroupIncludingDiscontinuedOperationInventory1
Other 6,000us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets
Total assets 25,659us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation
Liabilities:  
Accounts payable 12,520us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayableCurrent
Accrued liabilities 120us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities
Deferred tax liabilities 626us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilitiesNoncurrent
Total liabilities $ 13,266us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation