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Goodwill and Intangibles - Schedule of Estimated Amortization Expense of Intangibles (Detail) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]    
2019 $ 2,873  
2020 2,677  
2021 2,352  
2022 2,289  
2023 2,257  
Thereafter 7,568  
Net Intangible Assets $ 20,016 $ 22,437