Income Taxes (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Reconciliation of the total amounts of unrecognized tax benefits
Unrecognized Tax, Benefits Beginning Balance	$ 852	$ 220	$ 241
Change in prior year tax positions	(420)	581	(73)
Current tax positions	63	61	77
Settlements with taxing authorities	(145)
Lapse of statute of limitations	5	(10)	(25)
Unrecognized Tax Benefits, Ending Balance	$ 355	$ 852	$ 220

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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