Derivative Instruments and Hedging Activities (Impact of Derivative Instruments on Earnings) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Amount of (Income) Expense Recognized in Earnings on Derivative	$ 99	$ 171	$ 171
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	0	(507)	0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings	99	171	174
Interest Expense [Member] | Derivatives in Fair Value Hedging Relationships [Member]
Amount of (Income) Expense Recognized in Earnings on Derivative	0	0	(3)
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	99	171	174
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	0	(507)	0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings	$ 99	$ 171	$ 174