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Long-Term Debt - Amortization of Term Loan Agreements Together with Maturities of Other Long-term Debt (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Maturities of Long-term Debt [Abstract]  
2016 $ 7,366
2017 7,366
2018 7,721
2019 7,721
2020 316,513
Thereafter $ 17,183