Derivative Financial Instruments (Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 255	$ 0
Liability Derivatives	2,125	1,586
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	255	0
Liability Derivatives	2,125	1,586
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest rate swaps [Member] | Prepaid expenses and deferred costs [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest rate swaps [Member] | Deferred costs and other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	255	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest rate swaps [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	1,361	1,586
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest rate swaps [Member] | Other long-term liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign exchange forward currency contracts [Member] | Prepaid expenses and deferred costs [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign exchange forward currency contracts [Member] | Deferred costs and other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign exchange forward currency contracts [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	309	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign exchange forward currency contracts [Member] | Other long-term liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 455	$ 0