Interest Rate Swaps (Fair Value Of Cash Flow Hedge Derivative Contracts Included In The Consolidated Balance Sheets) (Details) (Interest Rate Swap [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Derivatives, Fair Value [Line Items]
Total derivative contracts, net	$ 1,803	$ 3,119
Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Total derivative contracts, net	1,498	1,705
Other long-term liabilities [Member]
Derivatives, Fair Value [Line Items]
Total derivative contracts, net	$ 305	$ 1,414