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EMPLOYEE RETIREMENT PLANS - Schedule of change in benefit obligation and plan assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Change in projected benefit obligation      
Service cost $ 467 $ 445  
Interest cost 2,632 1,754  
Amounts recognized in the consolidated balance sheets consist of:      
Long-term pension liability (13,412) (15,523)  
Amounts recognized in accumulated other comprehensive loss consist of:      
Net amount recognized 9,357 11,597 $ 18,011
Defined Benefit Pension Plan      
Change in projected benefit obligation      
Projected benefit obligation, beginning of year 39,609 52,507  
Service cost 467 445  
Interest cost 2,052 1,243  
Actuarial gain 916 (12,028)  
Benefits paid (2,633) (2,558)  
Projected benefit obligation, end of year 40,411 39,609  
Change in plan assets      
Actual return on plan assets 5,214 (5,652)  
Administrative expenses (467) (445)  
Benefits paid (2,633) (2,558)  
Funded status of plan (2,370) (3,682)  
Amounts recognized in the consolidated balance sheets consist of:      
Long-term pension liability (2,370) (3,682)  
Net amount recognized (2,370) (3,682)  
Amounts recognized in accumulated other comprehensive loss consist of:      
Accumulated loss, net of income tax benefit of $0,000, $3,382, $000, and $672, respectively 8,150 9,629  
Net amount recognized 8,150 9,629  
Supplemental Pension Plan      
Change in projected benefit obligation      
Projected benefit obligation, beginning of year 12,372 20,343  
Interest cost 580 511  
Plan settlement   (4,276)  
Actuarial gain (1,001) (3,864)  
Benefits paid (342) (342)  
Projected benefit obligation, end of year 11,609 12,372  
Change in plan assets      
Contributions   4,618  
Benefits paid   (342)  
Funded status of plan (11,609) (12,372)  
Amounts recognized in the consolidated balance sheets consist of:      
Accrued liabilities - other (567) (531)  
Long-term pension liability (11,042) (11,841)  
Net amount recognized (11,609) (12,372)  
Amounts recognized in accumulated other comprehensive loss consist of:      
Accumulated loss, net of income tax benefit of $0,000, $3,382, $000, and $672, respectively 1,168 1,914  
Prior service cost net of income tax benefit of $0, $0, $00 and $19, respectively 39 54  
Net amount recognized 1,207 1,968  
Plan Assets      
Change in plan assets      
Fair value of plan assets, beginning of year 35,927    
Fair value of plan assets, end of year   35,927  
Plan Assets | Defined Benefit Pension Plan      
Change in plan assets      
Fair value of plan assets, beginning of year 35,927 44,582  
Fair value of plan assets, end of year $ 38,041 $ 35,927