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           PENSION AND POSTRETIREMENT BENEFITS - Fair Value of Plan Assets (Details 7) (Pension Plan, USD $) 
        In Thousands, unless otherwise specified  | 
        
           Dec. 31, 2013 
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           Dec. 31, 2012 
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|---|---|---|
| Fair value of plan assets measured on a recurring basis | $ 20,290 | $ 19,981 | 
| Percentage | 100.00% | |
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           Equity Mutual Funds 
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| Fair value of plan assets measured on a recurring basis | 14,738 | |
| Percentage | 72.60% | |
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           Fixed Income Funds 
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| Fair value of plan assets measured on a recurring basis | 4,021 | |
| Percentage | 19.80% | |
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           Cash and Cash Equivalents 
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| Fair value of plan assets measured on a recurring basis | 803 | |
| Percentage | 4.00% | |
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           Other Investments 
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| Fair value of plan assets measured on a recurring basis | $ 728 | |
| Percentage | 3.60% | 
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- Definition 
          Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          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. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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