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Goodwill and Intangible Assets (Estimated Amortization Expense for Amortized Intangible Assets) (Detail) - Financial Services [Member]
$ in Thousands
Dec. 31, 2020
USD ($)
Intangible Assets [Line Items]  
2021 (remaining) $ 5,036
2022 9,943
2023 9,792
2024 9,509
2025 7,933
Thereafter 15,360
Total $ 57,573