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EMPLOYEE RETIREMENT PLANS (Details 3)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Discount rate 4.60% 5.40% 5.95%
Rate of compensation increase 4.50% 4.50% 4.50%
Long-term rate of return on plan assets 7.75% 8.00% 8.00%