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Intangible Assets - Estimated Amortization Expense (Detail)
$ in Thousands
Mar. 31, 2016
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
Remainder of 2016 $ 1,669
2017 3,018
2018 2,607
2019 2,561
2020 2,397
2021 $ 2,284