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Supplemental Disclosure of Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash paid during the period for:
Income taxes, net	$ 2,687	$ 5,897
Interest	13,540	12,420
Debt redemption premium		1,409
Non-cash financing activities:
Increase (decrease) in interest expense amortization of debt discount 8.875% and debt premium 10.25%	70	30
Decrease in net debt premium attributable to redemption of debt		$ 247
8.875% Senior Notes [Member]
Supplemental Disclosure of Cash Flow Information (Textual) [Abstract]
Interest on senior notes	8.875%
Senior Notes [Member]
Supplemental Disclosure of Cash Flow Information (Textual) [Abstract]
Interest on senior notes	8.875%

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The component of interest expense representing the noncash expenses charged against earnings in the period to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate caption: Noncash Interest Expense.

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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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