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Long-Term Debt and Capital Leases - Schedule of Future Maturities of Debt (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Apr. 30, 2014
Maturities of Long-term Debt and Capital Lease Obligations [Abstract]      
2016 $ 1,448    
2017 856    
2018 633    
2019 369,609    
2020 58,402    
Thereafter 92,699    
Long-term debt and capital lease $ 523,647 $ 535,711 $ 508,019