v3.26.1
Pension Plans And Other Postretirement Benefits (Components Of Net Periodic Benefit Cost) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Pension Benefits [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 222 $ 304 $ 444 $ 608
Interest cost 3,770 3,991 7,541 7,982
Expected return on plan assets (4,251) (4,266) (8,502) (8,532)
Amortization of prior service cost 76 78 153 156
Amortization of actuarial loss (gain) 825 833 1,649 1,666
Net periodic benefit cost (credit) 642 940 1,285 1,880
Other Postretirement Benefits [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 415 372 830 744
Interest cost 1,139 1,132 2,277 2,264
Expected return on plan assets (1,154) (1,071) (2,309) (2,142)
Amortization of actuarial loss (gain) (663) (401) (1,325) (802)
Net periodic benefit cost (credit) $ (263) $ 32 $ (527) $ 64