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Interest Expense (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended
	Apr. 23, 2014	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2013
Interest and Debt Expense [Abstract]
Debt Instrument, Interest Rate, Stated Percentage				6.375%
Interest incurred on debt		$ 5,322	$ 5,449
Amortization of discount on Senior Subordinated Notes		2,997	2,801
Amortization of debt issuance costs	300	633	555
Supply Chain Financing mark-up		47	203
Total interest expense		$ 8,999	$ 9,008
Effective interest rate, revolving credit facility		2.40%	2.42%
Senior Subordinated Notes implied rate		7.00%

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Supply Chain Financing Mark Up

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the cost of borrowed funds accounted for as interest expense.

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