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Debt (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Components of debt
Term loan	$ 210,000	$ 198,923
Original issue discount	(488)	(1,306)
Current maturities		2,043
Total long-term debt	209,512	196,880
Term loan [Member]
Components of debt
Term loan		200,229
Senior secured notes [Member]
Components of debt
Term loan	210,000
Revolving credit facility [Member]
Components of debt
Term loan

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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