Fair Value of Financial Instruments (Details) (Recurring, USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Level 2 \| Interest rate swaps
Fair value measurements
Derivative liabilities (included in other current liabilities)	$ (7,751)	$ (9,102)
Derivative liabilities (included in other liabilities)	(5,777)	(8,386)
Level 3 \| Cross currency swaps
Fair value measurements
Derivative liabilities (included in other current liabilities)	(3,818)	(2,160)
Derivative liabilities (included in other liabilities)	$ (21,044)	$ (8,966)

Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements.

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+ Details

- Definition

Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and which are expected to be extinguished or otherwise disposed of after one year or beyond the normal operating cycle, if longer, net of the effects of master netting arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name FASB Staff Position (FSP)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Research Bulletin (ARB)

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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