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POSTRETIREMENT BENEFIT PLANS (Tables)
9 Months Ended
Sep. 30, 2022
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
PRINCIPAL PENSION PLANSThree months ended September 30Nine months ended September 30
2022202120222021
Service cost for benefits earned$48 $57 $146 $179 
Prior service cost amortization22 
Expected return on plan assets(785)(763)(2,356)(2,288)
Interest cost on benefit obligations518 488 1,551 1,464 
Net actuarial loss amortization355 871 1,067 2,613 
Benefit plans cost$137 $661 $412 $1,990