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Goodwill and Other Intangible Assets - Summary of Estimated Intangible Asset Amortization Expense (Detail)
$ in Millions
Dec. 31, 2020
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
2021 $ 0.3
2022 0.2
2023 0.2
2024 0.2
2025 0.2
Thereafter 1.5
Total $ 2.6