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RETIREMENT PLANS - Net Periodic Pension Cost (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Pension Plan    
(Cost)/earnings components:    
Interest cost $ (333) $ (312)
Expected return on plan assets 315 336
Net amortization and deferral (42) (42)
Total net periodic pension cost (60) (18)
SERP    
(Cost)/earnings components:    
Interest cost (219) (207)
Net amortization and deferral (33) (39)
Total net periodic pension cost $ (252) $ (246)