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PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS (Net Periodic Benefit Cost) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2022
Pension Plan        
PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS        
Interest cost $ 0   $ 0  
Expected return on plan assets 0   (12)  
Amortization of net actuarial loss 0   112  
Settlement 0   0  
Net periodic benefit cost 0   100  
Pension Plan | Maximum        
PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS        
Settlement   $ 4,900    
SERPs        
PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS        
Interest cost 112   75  
Amortization of net actuarial (gain) loss (19)   21  
Amortization of net transition obligation 2   4  
Net periodic benefit cost 95   $ 100  
Projected benefit obligation $ 9,200     $ 9,200