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Goodwill and Other Intangibles, Net Goodwill and Other Intangibles, Net - Schedule of Intangible Asset Future Amortization Expense (Detail)
$ in Thousands
Dec. 31, 2017
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2018 $ 1,467
2019 448
2020 236
2021 105
2022 100
Total $ 2,356