Derivative Instruments and Hedging Activities (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2014 Interest Expense [Member] Derivatives in Cash Flow Hedging Relationships [Member]	Mar. 31, 2013 Interest Expense [Member] Derivatives in Cash Flow Hedging Relationships [Member]	Mar. 31, 2014 Interest Expense [Member] Derivatives in Cash Flow Hedging Relationships [Member]	Mar. 31, 2013 Interest Expense [Member] Derivatives in Cash Flow Hedging Relationships [Member]	Mar. 31, 2014 Total Accumulated Other Comprehensive (Loss) Earnings [Member]	Sep. 30, 2013 Total Accumulated Other Comprehensive (Loss) Earnings [Member]
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative		$ 0	$ 0	$ 0	$ 0
Unrecognized gains (loss)						120	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