EMPLOYEE BENEFITS - Allocation of Plan Assets (Details)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocations	100.00%	100.00%
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Minimum target asset allocation	45.00%
Maximum target asset allocation	55.00%
Actual asset allocations	47.10%	49.00%
Debt securities
Defined Benefit Plan Disclosure [Line Items]
Minimum target asset allocation	40.00%
Maximum target asset allocation	50.00%
Actual asset allocations	47.30%	44.70%
Other
Defined Benefit Plan Disclosure [Line Items]
Minimum target asset allocation	0.00%
Maximum target asset allocation	10.00%
Actual asset allocations	5.60%	6.30%

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Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920

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-Publisher FASB
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Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
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