Debt (Components Of Debt) (Details) (USD $)	Apr. 30, 2014	Jan. 31, 2014	Sep. 30, 2012
Debt Instrument [Line Items]
Capital leases	$ 5,671,000	$ 5,662,000
Debt and Capital Lease Obligations	404,033,000	397,602,000
Less-current maturities (included as "Revolving credit loans and current portion of long-term debt, net")	(49,856,000)	(43,481,000)
Long-term debt	354,177,000	354,121,000
Line of Credit Facility, Amount Outstanding	49,300,000
Senior Notes
Debt Instrument [Line Items]
Debt, stated interest rate in percentage	3.75%	3.75%	3.75%
Debt instrument expiration year			2017
Debt, face value	350,000,000	350,000,000	350,000,000
Less-unamortized debt discount	(908,000)	(974,000)	(1,300,000)
Senior notes, net	349,092,000	349,026,000
Other Committed And Uncommitted Revolving Credit Facilities, Expiring On Various Dates Through Fiscal 2017
Debt Instrument [Line Items]
Revolving credit loan	49,270,000	42,914,000
Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	0	0
Receivables Securitization Program [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	$ 0	$ 0