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DEFERRED COMPENSATION LIABILITY (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Post Retirement Benefits [Abstract] |  |  |
Restricted deposit account | $ 0 | $ 0 | $ 10,149
Total expense (gain) recognized | (860) | 1,303 | 1,369
Total deferred compensation liability | $ 14,954 | $ 15,814 |
Executive Vice President and Chief Financial Officer [Member] |  |  |
Post Retirement Benefits [Abstract] |  |  |
Retirement age | 67 years |  |
Imputed interest rate | 2.60% | 2.30% |
Chairman, President and CEO [Member] |  |  |
Post Retirement Benefits [Abstract] |  |  |
Retirement age | 72 years |  |
Imputed interest rate | 2.60% | 2.30% |
Required service period | 15 years |  |
Maximum benefit as a percentage of salary | 66.00% |  |
Chief Executive Officer and Chief Financial Officer [Member] |  |  |
Post Retirement Benefits [Abstract] |  |  |
Total expense (gain) recognized | $ (300) | $ 1,300 | $ 1,800

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- Definition Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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