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EMPLOYEE BENEFIT PLANS (Details 8) - Pension Plans, Defined Benefit [Member] - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
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Defined Benefit Plan, Information about Plan Assets [Abstract] |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | $ 37,100 | $ 30,671 | $ 28,429
Cash and cash equivalents | Fair Value, Inputs, Level 1 [Member] |  |  |
Defined Benefit Plan, Information about Plan Assets [Abstract] |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 44 | 2,454 |
Domestic equities | Fair Value, Inputs, Level 1 [Member] |  |  |
Defined Benefit Plan, Information about Plan Assets [Abstract] |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 4,340 | 3,067 |
International equities | Fair Value, Inputs, Level 1 [Member] |  |  |
Defined Benefit Plan, Information about Plan Assets [Abstract] |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 1,322 | 307 |
Mutual funds/ETFs | Fair Value, Inputs, Level 1 [Member] |  |  |
Defined Benefit Plan, Information about Plan Assets [Abstract] |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 30,470 | 23,310 |
Corporate bonds | Fair Value, Inputs, Level 2 [Member] |  |  |
Defined Benefit Plan, Information about Plan Assets [Abstract] |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | $ 924 | $ 1,533 |

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- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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