Derivative Instruments and Hedging Activities (Impact of Derivative Instruments on Earnings) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Amount of (Income) Expense Recognized in Earnings on Derivative	$ 42	$ 40	$ 127	$ 1,733
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	0	0	0	0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings	42	57	130	172
Interest Expense [Member] | Derivatives in Fair Value Hedging Relationships [Member]
Amount of (Income) Expense Recognized in Earnings on Derivative	0	(17)	(3)	(51)
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	0	0	0	0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings	0	0	0	0
Interest Expense [Member] | Derivatives in Cash Flow Hedging Relationships [Member]
Amount of (Income) Expense Recognized in Earnings on Derivative	42	57	130	172
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	0	0	0	0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings	42	57	130	172
Other (Income) Expense [Member] | Derivatives in Foreign Currency Relationships [Member]
Amount of (Income) Expense Recognized in Earnings on Derivative			0	1,612
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative			0	0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings			$ 0	$ 0