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RETIREMENT PLANS - Schedule of Assumptions Used (Details)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Principal assumptions used (benefit obligation):    
Discount rate 4.83% 5.02%
Rate of increase in compensation levels 3.00% 3.00%
Principal assumptions used (net periodic benefit):    
Discount rate 5.02% 2.83%
Rate of increase in compensation levels 3.00% 3.00%
Expected long-term rate of return on plan assets 6.00% 6.00%