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BENEFIT PLANS (Effects of One-Percentage-Point Change in Assumed Healthcare Cost Trend Rate) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
BENEFIT PLANS [Abstract]  
Increase on total of service and interest cost $ 1,977
Decrease on total of service and interest cost (1,905)
Increase on postretirement benefit obligation 175
Decrease on postretirement benefit obligation $ (170)