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EMPLOYEE BENEFIT PLANS (Details Textual) | 12 Months Ended
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Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2014 | Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan Minimum Number Of Annual Employee Hours | 1,000 |  |  |  |
Defined Benefit Plan Maximum Percent Of Assets Comprised Of Entity Common Stock | 10.00% |  |  |  |
Defined Contribution Plan Maximum Annual Contribution Per Union Employee Percent | 4.00% | 4.00% |  |  |
Defined Contribution Plan Amount Of Entity Common Stock And Securities Held | $ 1,200,000 |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Match |  |  |  | 6.00% | 2.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent |  |  |  | 3.00% | 1.00%
Defined Contribution Plan, Cost | 503,000 | $ 469,000 | $ 447,000 |  |
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year | $ 1,610,000 |  |  |  |
Equity Securities [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 60.00% |  |  |  |
Equity Securities [Member] | Minimum [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 50.00% |  |  |  |
Equity Securities [Member] | Maximum [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 60.00% |  |  |  |
Debt Securities [Member] | Minimum [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 40.00% |  |  |  |
Debt Securities [Member] | Maximum [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage | 50.00% |  |  |  |
Pension Plans, Defined Benefit [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan Maximum Percent Of Assets Comprised Of Entity Common Stock | 10.00% |  |  |  |
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets | 7.50% | 7.75% | 7.75% |  |
Defined Benefit Plan Percent Of Assets Comprised Of Entity Common Stock | 3.10% |  |  |  |
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year | $ 2,000,000 |  |  |  |
Pension Plans, Defined Benefit [Member] | Debt Securities [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Employer, Related Party, Amount | $ 1,200,000 |  |  |  |

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- Definition Defined Benefit Plan, Maximum Percent Of Assets Comprised Of Entity Common Stock. + References No definition available. + Details
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- Definition Defined Benefit Plan, Minimum Number Of Annual Employee Hours. + References No definition available. + Details
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- Definition Maximum percentage of union employee gross pay, by the terms of the plan, that the employer may contribute to a defined contribution plan. + References No definition available. + Details
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- Definition Amount of employer security in which defined benefit plan asset is invested. Includes, but is not limited to, security issued or managed by related party of employer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (n) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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