Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans (Details)

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Benefit Plans (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Defined Benefit Pension Plans        
Defined Benefit Plan, Net Periodic Expense (Benefit)        
Interest cost $ 807 $ 863 $ 2,421 $ 2,590
Expected return on plan assets (837) (826) (2,511) (2,479)
Settlement loss (gain) 0 22 (6) 50
Net periodic (benefit) expense (30) 59 (96) 161
Other Postretirement Benefits Plan        
Defined Benefit Plan, Net Periodic Expense (Benefit)        
Interest cost 6 6 18 18
Amortization of prior service credit (7) (31) (22) (94)
Amortization of net gain 0 (1) (1) (2)
Net periodic (benefit) expense $ (1) $ (26) $ (5) $ (78)