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           PENSION AND POSTRETIREMENT BENEFITS - Other Comprehensive Income (Details 3) (USD $) 
        In Thousands, unless otherwise specified  | 
        12 Months Ended | 
|---|---|
| 
           Dec. 31, 2013 
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           Pension Plan 
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| Other changes in plan assets and benefit obligations recognized in other comprehensive income | |
| Net actuarial cost | $ (634) | 
| Total recognized in other comprehensive income | (634) | 
| 
           Postretirement Plan 
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        |
| Other changes in plan assets and benefit obligations recognized in other comprehensive income | |
| Net actuarial cost | 176 | 
| Total recognized in other comprehensive income | $ 176 | 
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- Details 
          
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- Definition 
          Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount after tax of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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