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Other Non-Interest Income and Expense (Other Non-Interest Income and Expense) (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Other Income and Expenses [Abstract] |  |  |
Other | $ 54,941 | $ 45,217 | $ 48,528
Total other non-interest income | 54,941 | 45,217 | 48,528
Professional services | 53,932 | 40,908 | 34,747
Advertising, promotions and public relations | 48,608 | 39,994 | 34,539
Other | 126,827 | 113,799 | 102,868
Total other non-interest expense | $ 229,367 | $ 194,701 | $ 172,154

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