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PENSION PLANS (Defined Benefit Retirement Plan) (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Nov. 30, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Change in plan assets, at fair value:        
Employer contributions   $ 50 $ 0  
Pension Plan        
PENSION PLANS        
Consecutive period of service considered for highest average annual salaries for calculation of benefits under the reactivated plan   60 months    
Increase in unrecognized prior service cost due to reactivation of the plan   $ 5,900    
Amortization period of increase in prior service cost   13 years    
Change in benefit obligation:        
Benefit obligation at beginning of year   $ 20,420 21,919  
Interest cost   212 485 $ 641
Actuarial gains   (1,766) (427)  
Benefits paid   (5,398) (1,557)  
Annuity purchase   (13,468) 0  
Benefit obligation at end of the year   0 20,420 21,919
Change in plan assets, at fair value:        
Fair value of plan assets at beginning of year   20,785 21,153  
Actual return on plan assets   (1,969) 1,189  
Benefits paid   (5,398) (1,557)  
Annuity purchase   (13,468) 0  
Fair value of plan assets at end of year   0 20,785 21,153
Funded status at end of year   0 365  
Amounts recognized in AOCI:        
Net actuarial losses   0 $ (4,699)  
Benefit obligation actuarial assumptions:        
Weighted-average discount rate     2.40%  
Components of net periodic benefit cost:        
Interest cost   212 $ 485 641
Expected return on plan assets   (207) (549) (920)
Amortization of net actuarial losses   225 701 909
Settlement   4,884 0 0
Net periodic benefit cost   $ 5,114 $ 637 $ 630
Net periodic cost actuarial assumptions:        
Weighted-average discount rate   2.40% 2.30% 3.10%
Expected long-term rate of return on plan assets   2.30% 2.70% 4.50%
Pension Plan | Maximum        
Components of net periodic benefit cost:        
Settlement $ 4,900      
SERPs        
Change in benefit obligation:        
Benefit obligation at beginning of year   $ 12,297 $ 12,740  
Interest cost   301 264 $ 341
Actuarial gains   (2,960) (398)  
Benefits paid   (418) (309)  
Benefit obligation at end of the year   9,220 12,297 12,740
Change in plan assets, at fair value:        
Fair value of plan assets at beginning of year   0 0  
Employer contributions   418 309  
Benefits paid   (418) (309)  
Fair value of plan assets at end of year   0 0 0
Funded status at end of year   (9,220) (12,297)  
Amounts recognized in AOCI:        
Net transition obligation   (7) (26)  
Net actuarial losses   701 (2,337)  
Total amounts recognized in AOCI   $ 694 $ (2,363)  
Benefit obligation actuarial assumptions:        
Weighted-average discount rate   5.00% 2.50%  
Components of net periodic benefit cost:        
Interest cost   $ 301 $ 264 341
Amortization of net actuarial (gains) losses   79 335 251
Amortization of net transition obligation   18 18 18
Amortization of net actuarial losses   0 0 14
Net periodic benefit cost   $ 398 $ 617 $ 624
Net periodic cost actuarial assumptions:        
Weighted-average discount rate   2.70% 2.10% 3.10%