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Intangible Assets - Estimated Amortization Expense (Detail)
$ in Thousands
Jun. 30, 2017
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
Remainder of 2017 $ 699
2018 2,606
2019 2,606
2020 2,430
2021 2,291
2022 $ 2,251