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BENEFIT PLANS, Costs That Will Be Amortized from AOCI in Next Fiscal Year (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Pension Benefits [Member]  
Costs that will be amortized from accumulated other comprehensive (income) loss in net periodic (income) cost in next fiscal year [Abstract]  
Prior service credit $ 241
Net loss 3,212
Total 3,453
Post-retirement Benefits [Member]  
Costs that will be amortized from accumulated other comprehensive (income) loss in net periodic (income) cost in next fiscal year [Abstract]  
Prior service credit (179)
Net loss 40
Total $ (139)