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INCOME TAXES - Reconciliation of Effective Income Tax Rate to Statutory Federal Rate (Detail) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax Disclosure [Abstract] |  |  |
Statutory federal tax rate | 21.00% | 21.00% | 21.00%
Increase (decrease) resulting from: |  |  |
State taxes, net of federal benefit | 1.50% | 1.60% | 1.10%
Tax exempt interest income | (2.50%) | (4.10%) | (1.70%)
Income from life insurance | (0.80%) | (1.30%) | (0.90%)
Disallowed interest expense | 1.10% | 0.30% | 0.00%
Low-income housing credits and related expenses | (0.10%) | (0.20%) | (0.20%)
Merger-related expenses | 0.30% | 0.00% | 0.00%
Share-based compensation and related expenses | (0.10%) | (0.50%) | 0.20%
Other | 0.40% | 0.40% | 0.10%
Effective income tax rate | 20.80% | 17.20% | 19.60%

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