Quarterly report pursuant to Section 13 or 15(d)

Estimated Aggregate Future Amortization Expense for Intangible Assets (Detail)

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Estimated Aggregate Future Amortization Expense for Intangible Assets (Detail) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Finite Lived Intangible Assets Net [Abstract]    
For the six months ended December 31, 2017 $ 2,796  
For the twelve months ended December 31, 2018 5,709  
For the twelve months ended December 31, 2019 4,846  
For the twelve months ended December 31, 2020 4,740  
For the twelve months ended December 31, 2021 2,189  
Thereafter 15,002  
Total $ 35,282 $ 35,190