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BENEFIT PLANS, Weighted-average Assumptions Used to Determine Benefit Obligations (Details) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
Pension Benefits [Member] |  |
Weighed average assumption used in calculating benefit obligations [Abstract] |  |
Discount rate | 4.70% | 4.50%
Expected return on plan assets | 7.00% | 7.00%
Rate of compensation increase | 3.50% | 3.50%
Post-retirement Benefits [Member] |  |
Weighed average assumption used in calculating benefit obligations [Abstract] |  |
Discount rate | 4.70% | 4.50%

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- Definition An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. + References No definition available. + Details
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- Definition The interest rate used to adjust for the time value of money for the plan. + 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 (k)(1) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Expected rate of compensation increases (for pay-related plans). + 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 (k)(2) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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