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Intangible Assets, Net - Schedule of Finite Lived Intangible Assets Future Amortization Expense Table (Detail)
$ in Thousands
Dec. 31, 2017
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2018 $ 23,878
2019 23,810
2020 23,670
2021 23,678
2022 $ 23,678