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Accumulated Other Comprehensive Income (Components of Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Jun. 30, 2025
Sep. 30, 2024
Jun. 30, 2024
Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Unrecognized pension income, net of tax of $6,261 and $6,282, respectively $ (90,874) $ (150,273) $ (83,462) $ (156,317) $ (48,829) $ (46,206)
Accumulated Other Comprehensive Income 2,836 721        
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Unrecognized pension income, net of tax of $6,261 and $6,282, respectively 2,193 2,117        
Unrealized gain (loss) on foreign currency derivatives, net of tax of $528 and $0, respectively 552 (1,396)        
Reclassification out of Accumulated Other Comprehensive Income [Member]            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Unrealized gain on commodity swap derivatives, net of tax of $25 and $0, respectively $ 91 $ 0