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EMPLOYEE BENEFIT PLANS - SERP (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Employee Benefit Plans        
Pension and retirement plans liabilities $ 14,440,000 $ 14,440,000 $ 15,564,000  
Settlement loss   (1,180,000)   $ (647,000)
SERP        
Employee Benefit Plans        
Variable life insurance policies investment amount 7,100,000 7,100,000 9,700,000  
Fair value of plan assets 9,881,000 9,881,000 12,264,000  
Trading (losses) gains related to the SERP assets   (2,383,000) 1,643,000 906,000
Pension and retirement plans liabilities 14,440,000 14,440,000 15,564,000  
Change in fair value of liability unrealized gains   (2,315,000) $ 1,647,000 $ 1,395,000
Settlement loss $ (1,200,000) $ (2,600,000)