Derivative Instruments and Hedging Activities (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2014 Interest Expense [Member] Derivatives in Fair Value Hedging Relationships [Member]	Sep. 30, 2013 Interest Expense [Member] Derivatives in Fair Value Hedging Relationships [Member]	Sep. 30, 2012 Interest Expense [Member] Derivatives in Fair Value Hedging Relationships [Member]	Sep. 30, 2014 Interest Expense [Member] Derivatives in Cash Flow Hedging Relationships [Member]	Sep. 30, 2013 Interest Expense [Member] Derivatives in Cash Flow Hedging Relationships [Member]	Sep. 30, 2012 Interest Expense [Member] Derivatives in Cash Flow Hedging Relationships [Member]	Sep. 30, 2014 Total Accumulated Other Comprehensive (Loss) Earnings [Member]	Sep. 30, 2013 Total Accumulated Other Comprehensive (Loss) Earnings [Member]	Jun. 30, 2013 Interest Rate Contract [Member]
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	$ 0	$ (507)	$ 0	$ 0	$ 0	$ 0	$ 0	$ (507)	$ 0
Unrecognized gains (loss)										170	71
Net unrecognized losses on terminated derivative instruments expected to be reclassified to earnings	99
Term of gain or loss recognition in interest expense on terminated derivatives recorded in OCI	12 months
Derivative, Notional Amount												$ 25,000