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EMPLOYEE RETIREMENT PLANS AND POSTRETIREMENT BENEFITS - Net Periodic Pension Benefit Cost (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Net periodic pension benefit cost      
Service cost $ 1,016 $ 1,133 $ 1,282
Interest cost $ 2,909 $ 1,819 $ 1,452
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Selling, General and Administrative Expense Selling, General and Administrative Expense Selling, General and Administrative Expense
Expected return on plan assets $ (654) $ (535) $ (642)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Selling, General and Administrative Expense Selling, General and Administrative Expense Selling, General and Administrative Expense
Amortization of actuarial gains and losses $ (404) $ 322 $ 820
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Selling, General and Administrative Expense Selling, General and Administrative Expense Selling, General and Administrative Expense
Net periodic pension cost $ 2,867 $ 2,739 $ 2,912