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OTHER ASSETS (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Other assets [Abstract] |  |  |
Cash surrender value of the COLI | $ 11,600 | $ 12,300 |
Increase (decrease) in cash surrender value | (400) | 1,300 |
Investments held in Rabbi Trust [Member] |  |  |
Other assets [Abstract] |  |  |
Cost of investments | 1,400 | 1,300 |
Securities measured at fair value | 1,400 | 1,500 |
Unrealized gain on investments | 0 | 200 |
Supplemental Employee Retirement Plans [Member] |  |  |
Other assets [Abstract] |  |  |
Benefit obligation | 18,676 | 19,134 | $ 16,900
Value of assets earmarked for SERP use but not restricted to that use | $ 13,000 | $ 14,000 |

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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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