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           PENSION AND POSTRETIREMENT BENEFITS - Expected Benefit Payments (Details 8) (USD $) 
        In Thousands, unless otherwise specified  | 
        12 Months Ended | 
|---|---|
| 
           Dec. 31, 2013 
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           Pension Plan 
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| Expected Future Benefit Payments | |
| 2014 | $ 1,461 | 
| 2015 | 1,508 | 
| 2016 | 1,536 | 
| 2017 | 1,545 | 
| 2018 | 1,565 | 
| 2019-2022 | 8,126 | 
| Employer contribution expected to be paid during the year ending December 31, 2014 | 1,501 | 
| 
           Postretirement Plan 
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        |
| Expected Future Benefit Payments | |
| 2014 | 412 | 
| 2015 | 410 | 
| 2016 | 410 | 
| 2017 | 379 | 
| 2018 | 390 | 
| 2019-2022 | 1,584 | 
| Employer contribution expected to be paid during the year ending December 31, 2014 | $ 412 | 
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- Details 
          
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- Definition 
          Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of benefits expected to be paid in the fifth fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period. No definition available. 
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