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Goodwill and Intangible Assets - Future Amortization Expense Related to Intangible Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Finite Lived Intangible Assets Net [Abstract]    
2020 $ 907  
2021 901  
2022 869  
2023 345  
2024 1,513  
Total $ 4,535 $ 238