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INCOME TAXES - Reconciliation of Effective Applicable Income Tax Rate to Federal Statutory Rate (Detail) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Tax Disclosure [Abstract] |  |  |
Statutory federal tax rate | 35.00% | 35.00% | 35.00%
Increase/(decrease) resulting from: |  |  |
State taxes, net of federal benefit | 0.10% | 0.10% | (1.80%)
Tax exempt interest income | (11.30%) | (7.30%) | (11.90%)
Valuation allowance on deferred tax assets | 0.00% | (145.80%) | (13.00%)
Earnings from life insurance | (3.80%) | (2.60%) | (3.40%)
Disallowed interest | 0.40% | 0.20% | 0.30%
Low-income housing credits | (5.00%) | (3.70%) | (2.20%)
Benefit of operating loss carryforward | 0.00% | 0.00% | (3.80%)
Other | 1.80% | 0.10% | (1.30%)
Effective income tax rate | 17.20% | (124.00%) | (2.10%)

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