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Income Taxes - Company's Net Deferred Tax Asset Recorded in Other Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred tax assets: |  |
Allowance for losses and reserve for unfunded commitments | $ 37,656 | $ 32,519
Deferred compensation | 1,534 | 1,696
Other accrued expenses | 3,899 | 2,720
Additional unfunded status of the supplemental retirement plans | 15,434 | 16,036
Operating lease liability | 8,355 | 8,575
State taxes | 3,346 | 3,649
Share based compensation | 1,050 | 1,132
Nonaccrual interest | 706 | 643
Acquisition cost basis | 12,046 | 14,640
Unrealized loss on securities | 68,535 | 85,897
Tax credits | 852 | 852
Net operating loss carryforwards | 953 | 2,098
Other | 190 | 120
Total deferred tax assets | 154,556 | 170,577
Deferred tax liabilities: |  |
Securities income | (777) | (777)
Depreciation | (8,364) | (8,270)
Right of use asset | (7,726) | (7,941)
Funded pension liability | (3,999) | (4,110)
Securities accretion | (2,265) | (1,265)
Mortgage servicing rights valuation | (1,946) | (1,976)
Core deposit intangible | (2,814) | (4,778)
Junior subordinated debt | (1,171) | (1,293)
Prepaid expenses and other | (1,170) | (991)
Total deferred tax liability | (30,232) | (31,401)
Net deferred tax asset | $ 124,324 | $ 139,176

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