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GOODWILL AND INTANGIBLE ASSETS - Schedule of Estimated Amortization Expense of Intangibles (Detail) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]    
Remaining in 2019 $ 5,644  
2020 11,105  
2021 10,780  
2022 10,717  
2023 10,689  
Thereafter 53,049  
Total $ 101,984 $ 20,016