Debt (Components Of Debt) (Details) (USD $)	Apr. 30, 2013	Jan. 31, 2013	Sep. 30, 2012
Debt Instrument [Line Items]
Capital leases	$ 5,917,000	$ 6,243,000
Debt and Capital Lease Obligations	388,819,000	521,980,000
Less-current maturities (included as "Revolving credit loans and current portion of long-term debt, net")	(34,609,000)	(167,522,000)
Long-term debt	354,210,000	354,458,000
Senior Notes
Debt Instrument [Line Items]
Debt, stated interest rate in percentage	3.75%	3.75%	3.75%
Debt, face value	350,000,000	350,000,000	350,000,000
Less-unamortized debt discount	(1,172,000)	(1,238,000)	(1,300,000)
Senior notes, net	348,828,000	348,762,000
Other Committed And Uncommitted Revolving Credit Facilities, Expiring On Various Dates Through Fiscal 2017
Debt Instrument [Line Items]
Debt instrument expiration year	2017
Line of credit facility interest rate at end of period	5.14%	2.09%
Revolving credit loan	$ 34,074,000	$ 166,975,000

Debt instrument expiration year

No definition available.

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- Definition

LineofCreditFacilityInterestRateAtEndofPeriod

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- Definition

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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Carrying value as of the balance sheet date of the sum of short-term debt and current maturities of long-term debt and capital lease obligations, which are due within one year (or one business cycle if longer).

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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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Interest rate stated in the contractual debt agreement.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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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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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.

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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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