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Goodwill and Identifiable Intangible Assets - Estimated Future Amortization Expense (Detail)
$ in Thousands
Dec. 31, 2019
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2020 $ 7,304
2021 7,168
2022 6,573
2023 6,187
2024 6,094
Thereafter 18,045
Net Carrying Amount $ 51,371