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Accumulated Other Comprehensive Income (Components of Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Unrecognized pension income, net of tax of $6,268 and $6,282, respectively $ (83,462) $ (150,273) $ (97,399) $ (48,829) $ (56,959) $ (46,206)
Accumulated Other Comprehensive Income 3,236 721        
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 $6,268 and $6,282, respectively 2,168 2,117        
Unrealized gain (loss) on foreign currency derivatives, net of tax of $636 and $0, respectively 952 (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 $32 and $0, respectively $ 116 $ 0