Annual report [Section 13 and 15(d), not S-K Item 405]

RETIREMENT PLANS AND RELATED POST RETIREMENT BENEFITS - Narrative (Details)

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RETIREMENT PLANS AND RELATED POST RETIREMENT BENEFITS - Narrative (Details)
 12 Months Ended
Jan. 01, 2024
Dec. 31, 2024
USD ($)
retirement_plan
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Defined Benefit Plan Disclosure        
Number of non-qualified supplemental retirement defined benefit plans | retirement_plan   2    
Accumulated benefit obligation of the plans   $ 21,400,000 $ 22,000,000.0  
Fair value of plan assets at period end   0 0  
Unrecognized prior service costs   300,000    
Unrecognized actuarial gains   4,900,000    
Actuarial gain   $ 6,134,000 (1,529,000)  
Increase in the discount rate   0.69%    
Special Termination Benefits   $ 624,000 0  
Current accrued pension liability   1,000,000.0    
Long-term accrued pension liability   23,300,000    
Benefits expected to be paid 2025   1,000,000    
Benefits expected to be paid 2026   900,000    
Benefits expected to be paid 2027   900,000    
Benefits expected to be paid 2028   1,700,000    
Benefits expected to be paid 2029   2,000,000    
Benefits expected to be paid thereafter   9,500,000    
Change in retirement benefit obligation   800,000 800,000  
Percentage of fund 95.30%      
Contribution of employer   $ 900,000 $ 700,000 $ 500,000
Total employer contribution   1.00%    
Postemployment Retirement Benefits        
Defined Benefit Plan Disclosure        
Current accrued pension liability   $ 100,000    
Long-term accrued pension liability   $ 700,000