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Defined Benefit Plans - Net Periodic Pension Costs (Details) - Pension Plans, Defined Benefit [Member] - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service costs $ 140 $ 120 $ 400 $ 360
Interest costs 320 320 980 950
Expected return on plan assets (510) (530) (1,530) (1,580)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment 0 0 0 1,020
Amortization of net (gain)/loss 50 20 140 90
Net periodic benefit cost (income) $ 0 $ (70) $ (10) $ 840