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RETIREMENT PLANS AND OTHER POST-RETIREMENT BENEFITS - Schedule of Net Periodic Costs of Pension and Post-retirement Medical Benefit Plans (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]        
Stock-based compensation benefit     $ 5,800  
Pension Benefits        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 0 $ 0 0 $ 0
Interest cost 347 244 1,120 658
Amortization of prior service cost 4 11 16 33
Amortization of actuarial (loss) gain 21 161 64 492
Pension settlement charge 0 0 633 0
Total net periodic benefit expense 372 416 1,833 1,183
Other Benefits        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 3 0 8 0
Interest cost 44 33 133 98
Amortization of prior service cost 6 26 16 78
Amortization of actuarial (loss) gain (14) 0 (39) 0
Total net periodic benefit expense $ 39 $ 59 $ 118 $ 176