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Retirement Plans And Postretirement Benefits (Fair Value Of Assets Of, And The Funded Status Of, Postretirement Plans) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Changes in Plan Assets:      
Fair value of plan assets at beginning of period $ 108,377    
Fair value of plan assets at end of year 101,295 $ 108,377  
United States      
Changes in Benefit Obligation:      
Net benefit obligation at beginning of period 97,322 99,993  
Service cost 960 1,483 $ 1,390
Interest cost 4,409 4,722 3,242
Foreign currency exchange rates 0 0  
Net benefit obligation at end of period 89,455 97,322 99,993
Changes in Plan Assets:      
Fair value of plan assets at beginning of period 78,396 80,006  
Employer contributions 4,385 400  
Fair value of plan assets at end of year 75,953 78,396 80,006
Funded status: (13,502) (18,926)  
Current liabilities (286) (324)  
Non-current liabilities (13,216) (18,602)  
Net amount recognized (13,502) (18,926)  
Foreign      
Changes in Benefit Obligation:      
Net benefit obligation at beginning of period 37,481 31,065  
Service cost 942 1,053 1,220
Interest cost 617 870 227
Foreign currency exchange rates 2,748 (2,983)  
Net benefit obligation at end of period 34,045 37,481 31,065
Changes in Plan Assets:      
Fair value of plan assets at beginning of period 29,981 27,708  
Employer contributions 760 1,203  
Fair value of plan assets at end of year 25,342 29,981 $ 27,708
Funded status: (8,703) (7,500)  
Current liabilities 0 (34)  
Non-current liabilities (8,703) (7,466)  
Net amount recognized (8,703) (7,500)  
Postemployment Retirement Benefit      
Changes in Benefit Obligation:      
Net benefit obligation at beginning of period 14,300    
Net benefit obligation at end of period 12,500 14,300  
Changes in Plan Assets:      
Employer contributions $ 1,400 $ 1,300