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RETIREMENT PLAN BENEFIT LIABILITY - Components of Net Periodic Pension Cost (Details) - Supplemental Employee Retirement Plan Defined Benefit [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Components of net periodic pension cost [Abstract]        
Interest cost $ 630 $ 697 $ 1,260 $ 1,393
Service cost 130 225 373 450
Amortization of prior service cost 5 5 11 11
Total net periodic benefit cost $ 765 $ 927 $ 1,644 $ 1,854