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EMPLOYEE BENEFIT PLANS - Weighted average asset allocation by asset category along with target allocation (Details) (Retirement Income Plan)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	100.00%	100.00%
Target Allocation for 2014	100.00%
Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	0.60%	0.20%
Target Allocation for 2014, Minimum	0.00%
Target Allocation for 2014, Maximum	5.00%
Debt Securities - Core Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	25.30%	20.20%
Target Allocation for 2014, Minimum	15.00%
Target Allocation for 2014, Maximum	50.00%
Tactical - Fund of Equity and Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets		15.10%
Target Allocation for 2014, Minimum
Target Allocation for 2014, Maximum
Domestic Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	26.60%	15.20%
Target Allocation for 2014, Minimum	0.00%
Target Allocation for 2014, Maximum	30.00%
Global Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets		16.00%
Target Allocation for 2014, Minimum
Target Allocation for 2014, Maximum
International Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	31.40%	15.10%
Target Allocation for 2014, Minimum	0.00%
Target Allocation for 2014, Maximum	30.00%
Real Estate
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	8.30%	9.20%
Target Allocation for 2014, Minimum	0.00%
Target Allocation for 2014, Maximum	20.00%
Real Return
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets	7.80%	9.00%
Target Allocation for 2014, Minimum	0.00%
Target Allocation for 2014, Maximum	20.00%

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Target allocation 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 1

-Subparagraph (d)(i)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

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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 1

-Subparagraph (d)(i)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

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Target allocation minimum 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 1

-Subparagraph (d)(i)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920



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-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.

+ 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)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920



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-Publisher FASB

-Name Accounting Standards Codification

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