Income Taxes (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2012
Tax benefits recorded as a benefit to the effective tax rate
Balance at September 30, 2011	$ 2,524
Additions based on tax positions related to the current year
Additions for tax positions of prior years	578
Reduction for tax positions of prior years	(1,972)
Reductions due to lapse in statue of limitations/settlements	(430)
Balance at September 30, 2012	$ 700

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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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