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Summary Of Significant Accounting Policies (Supplemental Disclosures Of Cash Flow Information) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Summary Of Significant Accounting Policies [Abstract]
Interest	$ 141	$ 102	$ 563
Income taxes, net of refunds	$ 12,104	$ 3,889	$ 31,993

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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