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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, 2013	Sep. 30, 2012	Sep. 30, 2011
Summary Of Significant Accounting Policies [Line Items]
Interest, net of interest income	$ 164	$ 141	$ 102
Income taxes, net of refunds	14,783	12,104	3,889
Non-cash capital expenditures	$ 2,807

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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- Definition

The amount of cash paid for interest during the period net of cash paid for interest that is capitalized.

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