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Goodwill and Other Intangible Assets, Net of Accumulated Amortization - Estimated Future Amortization Expense of Definite Life Intangible Assets (Detail)
$ in Thousands
Mar. 31, 2018
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
2018 $ 3,047
2019 3,934
2020 3,691
2021 2,709
2022 and thereafter 2,725
Total $ 16,106