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PENSION AND POSTRETIREMENT WELFARE PLANS (Details 2) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Pension Plan
    
Benefits expected to be paid    
2013 $ 286,000  
2014 290,000  
2015 320,000  
2016 323,000  
2017 338,000  
2018 - 2022 1,826,000  
Components of net periodic expense    
Service cost 122,000 104,000
Interest cost 259,000 264,000
Amortization of net loss (gain) 150,000 51,000
Expected return on assets (245,000) (257,000)
Net periodic expense 286,000 162,000
Amortization of cumulative gains and losses, threshold, as a percentage of the greater of the Market Related Value of Assets and the Projected Benefit Obligation 10.00%  
Postretirement Welfare Plan
    
Benefits expected to be paid    
2013 57,000  
2014 60,000  
2015 67,000  
2016 65,000  
2017 72,000  
2018 - 2022 404,000  
Components of net periodic expense    
Service cost 22,000 22,000
Interest cost 67,000 70,000
Amortization of prior service credit (12,000) (12,000)
Amortization of net loss (gain) (49,000) (69,000)
Net periodic expense $ 28,000 $ 11,000