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Loss on Disposal of Susidiaries Assets and Liabilities Held for Sale Table (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2015	Jan. 31, 2014
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Including Discontinued Operation, Liabilities, Current	$ 71,447	$ 0
Cash and Cash Equivalents [Member]
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents	4,247
Accounts Receivable [Member]
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Including Discontinued Operation, Trade Receivables	42,674
Inventories [Member]
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Including Discontinued Operation, Inventory	41,650
Prepaid Expenses and Other Assets [Member]
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Including Discontinued Operation, Prepaid and Other Assets	8,820
Property, Plant and Equipment [Member]
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment	976
Other Assets [Member]
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Including Discontinued Operation, Other Assets, Current	3,339
Assets, Total [Member]
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Assets of Business Transferred under Contractual Arrangement	101,706
Accounts Payable [Member]
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Including Discontinued Operation, Accounts Payable	39,816
Accrued Expenses and Other Liabilities [Member]
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Including Discontinued Operation, Accrued Liabilities	2,931
Revolving Credit Facility [Member]
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Including Discontinued Operation, Liabilities, Current	28,639
Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent	61
Liabilities, Total [Member]
Significant Acquisitions and Disposals [Line Items]
Disposal Group, Liabilities of Business Transferred under Contractual Arrangement	$ 71,447