Income Taxes - Unrecognized Tax Liabilities (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013
Income Taxes [Abstract]
Unrecognized Tax Benefits Beginning Balance	$ 5,343
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	13
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	8
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	(63)
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities	0
Unrecognized Tax Benefits Ending Balance	$ 5,301