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PENSION AND RETIREMENT PLANS LIABILITIES - Components of net periodic cost (benefit) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
EMPLOYEE BENEFIT PLANS        
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 Selling, General and Administrative Expense
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 Selling, General and Administrative Expense
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 Selling, General and Administrative Expense
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Selling, General and Administrative Expense  
Retirement Income Plan        
EMPLOYEE BENEFIT PLANS        
Interest cost $ 33 $ 37 $ 66 $ 74
Expected return on plan assets   (72)   (144)
Amortization of net losses 28 18 56 36
Net periodic (benefit) cost $ 61 $ (17) $ 122 $ (34)