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EMPLOYEE BENEFIT PLANS - Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]      
Net actuarial (gain) loss $ (1,132) $ 338 $ 350
Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
Net actuarial (gain) loss (953) 178  
Settlement charge 0 0  
Prior service cost (credit) 1,072 893  
Total recognized in net periodic benefit cost and other comprehensive loss 119 1,071  
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost 91    
Expected cash contributions 0    
Expected amortization from accumulated other comprehensive loss into net periodic pension cost 0    
Non-qualified Supplemental Executive Retirement Plan      
Defined Benefit Plan Disclosure [Line Items]      
Net actuarial (gain) loss (137) 202  
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Accumulated other comprehensive loss at beginning of the year (pre-tax) 779 619  
Actuarial loss (137) 202  
Amortization of actuarial loss (43) (42)  
Accumulated other comprehensive loss at end of year (pre-tax) 599 $ 779 $ 619
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost 461    
Expected amortization from accumulated other comprehensive loss into net periodic pension cost $ 37