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PENSION AND POSTRETIREMENT PLANS Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Defined Benefit Plan Disclosure [Line Items]    
Contribution to the plan $ 0 $ 0
SERP Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Contribution to the plan 0 0
Distribution from the plan $ 28 $ 28