Derivative Instruments and Hedging Activities (Impact of Derivative Instruments on Earnings) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Amount of (Income) Expense Recognized in Earnings on Derivative	$ 171	$ 171	$ 1,774
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	(507)	0	0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings	171	174	229
Interest Expense [Member] | Derivatives in Fair Value Hedging Relationships [Member]
Amount of (Income) Expense Recognized in Earnings on Derivative	0	(3)	(67)
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	0	0	0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings	0	0	0
Interest Expense [Member] | Derivatives in Cash Flow Hedging Relationships [Member]
Amount of (Income) Expense Recognized in Earnings on Derivative	171	174	229
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	(507)	0	0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings	171	174	229
Other (Income) Expense [Member] | Derivatives in Foreign Currency Relationships [Member]
Amount of (Income) Expense Recognized in Earnings on Derivative			1,612
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative			0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings			$ 0