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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)

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