Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Schedule of Long-Term Debt (Detail)

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Long-Term Debt - Schedule of Long-Term Debt (Detail) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Debt Disclosure [Abstract]    
Borrowings under the senior secured credit facility $ 975,000,000 $ 487,500,000
Capital leases 100,000 100,000
Other debt 200,000   
Total 975,324,000 487,607,000
Less: current portion 62,807,000 56,302,000
Long-term portion $ 912,517,000 $ 431,305,000