EMPLOYEE BENEFITS (Details 3)	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Benefits
Weighted average assumptions used to determine benefit obligations:
Discount rate (as a percent)	4.05%	4.30%	3.90%
Rate of compensation increase (as a percent)	3.00%	3.00%	3.00%
Weighted average assumptions used to determine net periodic benefit cost:
Discount rate (as a percent)	4.30%	3.90%	4.90%
Rate of compensation increase (as a percent)	3.00%	3.00%	3.00%
Expected long-term rate of return (as a percent)	7.50%	7.50%	7.50%
SERP Benefits
Weighted average assumptions used to determine benefit obligations:
Discount rate (as a percent)	4.01%	4.20%	3.80%
Rate of compensation increase (as a percent)	5.00%	5.00%	5.00%
Weighted average assumptions used to determine net periodic benefit cost:
Discount rate (as a percent)	4.20%	3.80%	4.70%
Rate of compensation increase (as a percent)	5.00%	5.00%	5.00%
Expected long-term rate of return (as a percent)

The interest rate used to adjust for the time value of money for the plan.

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=65897934&loc=d3e1928-114920

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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=65897934&loc=d3e1928-114920

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The interest rate used to adjust for the time value of money.

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Long-Term Rate of Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512046

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-Name Accounting Standards Codification
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Expected rate of compensation increases (for pay-related plans).

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