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EMPLOYEE BENEFIT PLANS - Segregation of assets by the level of valuations inputs (Details) - Defined Benefit Pension Items - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Defined Benefit Plan, Plan Assets, Amount $ 70,432 $ 58,447 $ 44,831
Cash and Cash Equivalents | Level 1      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Defined Benefit Plan, Plan Assets, Amount 56 725  
Domestic equities. | Level 1      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Defined Benefit Plan, Plan Assets, Amount 8,488 6,219  
International equities | Level 1      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Defined Benefit Plan, Plan Assets, Amount 199 0  
Mutual funds/ETFs | Level 1      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Defined Benefit Plan, Plan Assets, Amount 59,306 48,009  
Corporate bonds | Level 2      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Defined Benefit Plan, Plan Assets, Amount $ 2,383 $ 3,494