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Non-interest Income and Expense - Components of Other Noninterest Income (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Schedule Of Other Noninterest Income And Expense [Line Items] |  |  |
Total service charges and fees | $ 50,088 | $ 49,765 | $ 43,948
Asset management and commission income | 4,517 | 3,986 | 3,668
Increase in cash value of life insurance | 3,150 | 2,858 | 2,775
Gain on sale of loans | 1,166 | 2,342 | 9,580
Lease brokerage income | 441 | 820 | 746
Sale of customer checks | 1,383 | 1,167 | 459
Loss on sale of investment securities | (284) | 0 | 0
Gain (loss) on marketable equity securities | 36 | (340) | (86)
Other | 903 | 2,448 | 2,574
Total other noninterest income | 11,312 | 13,281 | 19,716
Total noninterest income | 61,400 | 63,046 | 63,664
ATM and interchange fees |  |  |
Schedule Of Other Noninterest Income And Expense [Line Items] |  |  |
Total service charges and fees | 26,459 | 26,767 | 25,356
Service charges on deposit accounts |  |  |
Schedule Of Other Noninterest Income And Expense [Line Items] |  |  |
Total service charges and fees | 17,595 | 16,536 | 14,013
Other service fees |  |  |
Schedule Of Other Noninterest Income And Expense [Line Items] |  |  |
Total service charges and fees | 4,732 | 4,274 | 3,570
Mortgage banking service fees |  |  |
Schedule Of Other Noninterest Income And Expense [Line Items] |  |  |
Total service charges and fees | 1,808 | 1,887 | 1,881
Change in value of mortgage loan servicing rights |  |  |
Schedule Of Other Noninterest Income And Expense [Line Items] |  |  |
Total service charges and fees | $ (506) | $ 301 | $ (872)

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