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EMPLOYEE BENEFIT PLANS (Tables) | 12 Months Ended
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Dec. 31, 2017
Compensation and Retirement Disclosure [Abstract] |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] |
|  | YEAR ENDED DECEMBER 31,
|  | 2017 |  | 2016
|  | (IN THOUSANDS)
CHANGE IN BENEFIT OBLIGATION: |  |  |  |  |  |  |  |
Benefit obligation at beginning of year |  | $ | 38,637 |  |  | $ | 33,117 |
Service cost |  |  | 1,516 |  |  |  | 1,468 |
Interest cost |  |  | 1,292 |  |  |  | 1,430 |
Actuarial (gain) loss |  |  | 1,588 |  |  |  | 4,578 |
Benefits paid |  |  | (2,020 | ) |  |  | (1,956 | )
Benefit obligation at end of year |  |  | 41,013 |  |  |  | 38,637 |
CHANGE IN PLAN ASSETS: |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  |  | 30,671 |  |  |  | 28,429 |
Actual return on plan assets |  |  | 4,949 |  |  |  | 348 |
Employer contributions |  |  | 3,500 |  |  |  | 3,850 |
Benefits paid |  |  | (2,020 | ) |  |  | (1,956 | )
Fair value of plan assets at end of year |  |  | 37,100 |  |  |  | 30,671 |
Funded status of the plan |  | $ | (3,913 | ) |  | $ | (7,966 | )
Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block] |
|  | YEAR ENDED DECEMBER 31,
|  | 2017 |  | 2016
|  | (IN THOUSANDS)
AMOUNTS NOT YET RECOGNIZED AS A COMPONENT OF NET PERIODIC PENSION COST: |  |  |  |  |  |  |  |
Amounts recognized in accumulated other comprehensive loss consists of: |  |  |  |  |  |  |  |
Net actuarial loss |  | $ | 15,326 |  |  | $ | 17,602 |
Total |  | $ | 15,326 |  |  | $ | 17,602 |
Schedule of Accumulated and Projected Benefit Obligations [Table Text Block] |
|  | YEAR ENDED DECEMBER 31,
|  | 2017 |  | 2016
|  | (IN THOUSANDS)
ACCUMULATED BENEFIT OBLIGATION: |  |  |  |  |  |  |  |
Accumulated benefit obligation |  | $ | 37,594 |  |  | $ | 35,153 |
Schedule Of Assumptions Used To Calculate Benefit Obligations [Table Text Block] | The weighted-average assumptions used to determine benefit obligations at December 31, 2017 and 2016 were as follows:
|  | YEAR ENDED DECEMBER 31,
|  | 2017 |  | 2016
WEIGHTED AVERAGE ASSUMPTIONS: |  |  |  |  |  |  |  |
Discount rate |  |  | 3.63 | % |  |  | 4.12 | %
Salary scale |  |  | 2.50 |  |  |  | 2.50 |
Schedule of Net Benefit Costs [Table Text Block] | ##
|  | YEAR ENDED DECEMBER 31,
|  | 2017 |  | 2016 |  | 2015
|  | (IN THOUSANDS)
COMPONENTS OF NET PERIODIC BENEFIT COST: |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 1,516 |  |  | $ | 1,468 |  |  | $ | 1,557 |
Interest cost |  |  | 1,292 |  |  |  | 1,430 |  |  |  | 1,341 |
Expected return on plan assets |  |  | (2,539 | ) |  |  | (2,275 | ) |  |  | (2,130 | )
Recognized net actuarial loss |  |  | 1,454 |  |  |  | 1,333 |  |  |  | 1,386 |
Net periodic pension cost |  | $ | 1,723 |  |  | $ | 1,956 |  |  | $ | 2,154 |
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] |
|  | YEAR ENDED DECEMBER 31,
|  | 2017 |  | 2016 |  | 2015
|  | (IN THOUSANDS)
OTHER CHANGES IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN OTHER COMPREHENSIVE LOSS |  |  |  |  |  |  |  |  |  |  |  |
Net (gain) loss |  | $ | (822 | ) |  | $ | 6,505 |  |  | $ | 1,221 |
Recognized loss |  |  | (1,454 | ) |  |  | (1,333 | ) |  |  | (1,386 | )
Total recognized in other comprehensive loss before tax effect |  | $ | (2,276 | ) |  | $ | 5,172 |  |  | $ | (165 | )
Total recognized in net benefit cost and other comprehensive loss before tax effect |  | $ | (553 | ) |  | $ | 7,128 |  |  | $ | 1,989 |
Schedule Of Assumptions Used To Calculate Net Periodic Benefit Cost [Table Text Block] | The weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31, 2017, 2016 and 2015 were as follows:
|  | YEAR ENDED DECEMBER 31,
|  | 2017 |  | 2016 |  | 2015
WEIGHTED AVERAGE ASSUMPTIONS: |  |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  | 4.12 | % |  |  | 4.20 | % |  |  | 4.00 | %
Expected return on plan assets |  |  | 7.75 |  |  |  | 7.75 |  |  |  | 8.00 |
Rate of compensation increase |  |  | 2.50 |  |  |  | 2.50 |  |  |  | 2.50 |
Schedule of Allocation of Plan Assets [Table Text Block] | The plan’s measurement date is December 31, 2017. This plan’s asset allocations at December 31, 2017 and 2016, by asset category are as follows:
|  | YEAR ENDED DECEMBER 31,
|  | 2017 |  | 2016
ASSET CATEGORY: |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  | —% |  |  |  | 8 | %
Domestic equities |  |  | 12 |  |  |  | 10 |
Mutual funds/ETFs |  |  | 82 |  |  |  | 76 |
International equities |  |  | 4 |  |  |  | 1 |
Corporate bonds |  |  | 2 |  |  |  | 5 |
Total |  |  | 100 | % |  |  | 100 | %
Schedule Of Fair Value Of Plan Assets [Table Text Block] | The major categories of assets in the Company’s Pension Plan as of yearend are presented in the following table. Assets are segregated by the level of the valuation inputs within the fair value hierarchy established by ASC Topic 820 utilized to measure fair value.
|  | YEAR ENDED DECEMBER 31,
|  | 2017 |  | 2016
|  | (IN THOUSANDS)
Level 1: |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 44 |  |  | $ | 2,454 |
Domestic equities |  |  | 4,340 |  |  |  | 3,067 |
Mutual funds/ETFs |  |  | 30,470 |  |  |  | 23,310 |
International equities |  |  | 1,322 |  |  |  | 307 |
Level 2: |  |  |  |  |  |  |  |
Corporate bonds |  |  | 924 |  |  |  | 1,533 |
Total fair value of plan assets |  | $ | 37,100 |  |  | $ | 30,671 |
Schedule of Expected Benefit Payments [Table Text Block] | The following benefit payments, which reflect future service, as appropriate, are expected to be paid.
YEAR: |  | ESTIMATED FUTURE BENEFIT PAYMENTS
|  | (IN THOUSANDS) |  |  |  |
2018 |  | $ | 2,698 |  |  |  |  |
2019 |  |  | 2,692 |  |  |  |  |
2020 |  |  | 2,817 |  |  |  |  |
2021 |  |  | 2,832 |  |  |  |  |
2022 |  |  | 3,116 |  |  |  |  |
Years 2023 – 2027 |  |  | 14,988 |  |  |  |  |

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2439-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2417-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2410-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=77993564&loc=d3e4179-114921 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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