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Intangible Assets - Estimated Amortization Expense (Detail)
$ in Thousands
Jun. 30, 2019
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
Remainder of 2019 $ 664
2020 2,480
2021 2,341
2022 2,301
2023 1,712
2024 $ 1,624