Debt Debt (Components of Debt) (Details) - USD ($) $ in Thousands	Oct. 31, 2015	Jan. 31, 2015	Sep. 21, 2012
Debt Instrument
Capital leases	$ 0	$ 4,262
Debt and Capital Lease Obligations	365,143	364,879
Current maturities (included as “revolving credit loans and current maturities of long-term debt, net”)	16,744	13,303
Total long-term debt, less current maturities	348,399	351,576
Senior Notes
Debt Instrument
Senior Notes, interest at 3.75% payable semi-annually, due September 21, 2017	350,000	350,000	$ 350,000
Unamortized debt discount and debt issuance costs	1,601	2,231
Senior Notes, net	348,399	347,769
Other Committed And Uncommitted Revolving Credit Facilities Expiring on Various Dates Through Fiscal Two Thousand and Seventeen [Member]
Debt Instrument
Other committed and uncommitted revolving credit facilities, average interest rate of 5.13% and 4.97% at October 31, 2015 and January 31, 2015, respectively, expiring on various dates through fiscal 2017	$ 16,744	$ 12,848

Unamortized debt discount and debt issuance costs

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Face (par) amount of debt instrument at time of issuance.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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