XML 71 R60.htm IDEA: XBRL DOCUMENT v3.25.2
Pension and Other Postretirement Benefits - Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Pension Benefits        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost $ 108 $ 108 $ 210 $ 217
Interest cost 2,379 2,364 4,663 4,738
Expected return on plan assets (2,076) (2,020) (4,059) (4,050)
Actuarial loss (gain) amortization 150 127 290 255
Prior service cost amortization 7 7 12 14
Net periodic benefit cost (income) 568 586 1,116 1,174
Other Postretirement Benefits        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost 0 0 0 0
Interest cost 14 15 28 31
Expected return on plan assets 0 0 0 0
Actuarial loss (gain) amortization (26) (29) (52) (59)
Prior service cost amortization 0 0 0 0
Net periodic benefit cost (income) $ (12) $ (14) $ (24) $ (28)