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EMPLOYEE BENEFIT PLANS (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Pension Plans
   
Change in projected benefit obligation:    
Projected benefit obligation at plan acquisition date $ 6,040 $ 5,744
Interest cost 273 223
Actuarial loss 498 451
Benefits paid (353) (258)
Settlements (95) (120)
Projected benefit obligation at end of year 6,363 6,040
Change in fair value of plan assets:    
Fair value of plan assets at plan acquisition date 4,456 4,915
Actual return on plan assets 396 (267)
Contributions by employer 191 186
Benefits paid (353) (258)
Settlements (95) (120)
Fair value of plan assets at end of year 4,595 4,456
Funded status of the plan    
Underfunded status 1,768 1,584
Amounts Recognized in Statement of Financial Position    
Noncurrent Liabilities (1,768) (1,584)
Net pension cost    
Interest cost 273 223
Expected return on plan assets (350) (319)
Amortization of unrecognized actuarial loss 47  
Net periodic pension credit (30) (96)
Changes in plan assets and benefit obligations recognized in accumulated other comprehensive income    
Amortization of actuarial loss (47)  
Actuarial loss 451 1,037
Total recognized in accumulated other comprehensive income 404 1,037
Total recognized in net periodic pension cost and other comprehensive income 374 941
Employee benefit plans, additional disclosures    
Expected cash contributions by employer in 2013 360  
Amount expected to be amortized from other comprehensive income into net periodic pension cost over the next fiscal year 101  
Projected benefit obligation    
Discount rate (as a percent) 4.05% 4.66%
Net periodic pension cost    
Discount rate (as a percent) 4.66% 5.36%
Long term rate of return on plan assets (as a percent) 8.00% 9.00%
Estimated benefit payments    
2013 377  
2014 378  
2013 383  
2016 375  
2017 371  
2018-2022 1,972  
Postretirement Benefits
   
Change in projected benefit obligation:    
Projected benefit obligation at plan acquisition date 1,083 1,468
Interest cost 44 53
Participant contributions 51 30
Actuarial loss 150 44
Benefits paid (144) (107)
Amendments   (405)
Projected benefit obligation at end of year 1,184 1,083
Change in fair value of plan assets:    
Contributions by employer 93 77
Contributions by participant 51 30
Benefits paid (144) (107)
Amounts Recognized in Statement of Financial Position    
Current Liabilities (99) (93)
Noncurrent Liabilities (1,085) (990)
Net pension cost    
Interest cost 44 53
Changes in plan assets and benefit obligations recognized in accumulated other comprehensive income    
Actuarial loss 194 44
Accrued postretirement liability recognized (1,361) (1,444)
Prior service cost (371) (405)
Total recognized in accumulated other comprehensive income (177) (361)
Employee benefit plans, additional disclosures    
Expected cash contributions by employer in 2013 99  
Amount expected to be amortized from other comprehensive income into net periodic pension cost over the next fiscal year 27  
Net periodic pension cost    
Discount rate (as a percent) 3.25% 4.25%
Assumed health care cost trend rate    
Assumed health care cost trend rate (as a percent) 8.00%  
Assumed health care cost trend rate in 2017 (as a percent) 5.00%  
Estimated benefit payments    
2013 99  
2014 97  
2013 94  
2016 92  
2017 90  
2018-2022 $ 411