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Income Taxes - Company's Net Deferred Tax Asset Recorded in Other Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Deferred tax assets: |  |
Allowance for losses and reserve for unfunded commitments | $ 38,837 | $ 37,656
Deferred compensation | 1,471 | 1,534
Other accrued expenses | 3,881 | 3,899
Additional unfunded status of the supplemental retirement plans | 15,062 | 15,434
Operating lease liability | 7,520 | 8,355
State taxes | 2,814 | 3,346
Share based compensation | 1,200 | 1,050
Nonaccrual interest | 1,477 | 706
Acquisition cost basis | 10,477 | 12,046
Unrealized loss on securities | 69,075 | 68,535
Tax credits | 852 | 852
Net operating loss carryforwards | 1,097 | 953
Other | 136 | 190
Total deferred tax assets | 153,899 | 154,556
Deferred tax liabilities: |  |
Securities income | (777) | (777)
Depreciation | (7,696) | (8,364)
Right of use asset | (6,956) | (7,726)
Funded pension liability | (4,755) | (3,999)
Securities accretion | (2,957) | (2,265)
Mortgage servicing rights valuation | (1,953) | (1,946)
Core deposit intangible | (1,647) | (2,814)
Junior subordinated debt | (1,036) | (1,171)
Prepaid expenses and other | (1,368) | (1,170)
Total deferred tax liability | (29,145) | (30,232)
Net deferred tax asset | $ 124,754 | $ 124,324

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