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RETIREMENT PLANS (Assumptions Used To Determine The Benefit Obligation and Net Periodic Benefit) (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Postemployment Benefits [Abstract]    
Assumptions Used Calculating Benefit Obligation: Discount rate 2.45% 3.20%
Assumptions Used Calculating Benefit Obligation: Rate of compensation increase 3.50% 3.50%
Assumptions Used Calculating Net Periodic Benefit Cost: Discount rate 3.20% 4.10%
Assumptions Used Calculating Net Periodic Benefit Cost: Expected long-term rate of return on plan assets 6.75% 6.75%
Assumptions Used Calculating Net Periodic Benefit Cost: Rate of compensation increase 3.50% 3.50%