PENSION AND POSTRETIREMENT WELFARE PLANS (Details 3) (Pension Plan, USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Weighted average assumptions used to determine the benefit obligation
Discount rate (as a percent)	4.75%	4.00%
Rate of compensation increases (as a percent)	2.00%	5.00%
Weighted average assumptions used to determine net periodic expense
Discount rate (as a percent)	4.00%	4.75%
Expected long-term rate of return on plan assets (as a percent)	7.00%	7.00%
Rate of compensation increases (as a percent)	5.00%	5.00%
Expected contributions
Expected contributions during 2014	$ 285
Pension plans' actual percentage of plan assets and the target percentage of plan assets
Actual percentage of plan assets	100.00%	100.00%
Total (as a percent)	100.00%
Cash equivalents
Pension plans' actual percentage of plan assets and the target percentage of plan assets
Actual percentage of plan assets	5.00%	4.00%
Equity securities
Pension plans' actual percentage of plan assets and the target percentage of plan assets
Actual percentage of plan assets	64.00%	65.00%
Minimum (as a percent)	55.00%
Maximum (as a percent)	75.00%
Fixed income securities
Pension plans' actual percentage of plan assets and the target percentage of plan assets
Actual percentage of plan assets	31.00%	31.00%
Minimum (as a percent)	25.00%
Maximum (as a percent)	45.00%
Cash
Pension plans' actual percentage of plan assets and the target percentage of plan assets
Minimum (as a percent)	0.00%
Maximum (as a percent)	20.00%

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

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Expected rate of compensation increases (for pay-related plans).

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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

-Topic 715

-SubTopic 30

-Glossary Expected Long-Term Rate of Return on Plan Assets

-URI http://asc.fasb.org/extlink&oid=6512013

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (k)(3)

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Expected rate of compensation increases (for pay-related plans).

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Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

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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)

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-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.

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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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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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-Section 50

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