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RETIREMENT PLANS - Additional Information (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 USD ($) plan | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Compensation and Retirement Disclosure [Abstract] |  |  |
Contributions charged | $ 361 | $ 357 | $ 311
Deferred Compensation Arrangement |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Age to qualify for payment of retirement benefits | 65 years |  |
Estimated present value of future benefits to be paid | $ 115 | 125 |
Total annual expense | 12 | 13 | 1
Supplemental Discretionary Deferred Compensation Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total annual expense | 30 | 25 | 10
Account balance of the trust | 1,449 | 1,385 |
Supplemental Retirement and Salary Continuation Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated present value of future benefits to be paid | 5,211 | 4,844 |
Total annual expense | $ 626 | 575 | 549
Number of defined benefit pension plans | plan | 2 |  |
Life Insurance Coverage Post-retirement Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated present value of future benefits to be paid | $ 799 | 670 |
Total annual expense | $ 129 | $ 104 | $ 42

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