v3.26.3
Retirement Plans (Tables)
 9 Months Ended
Sep. 30, 2026
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs [Table Text Block]
The components of net periodic pension benefit and net periodic cost for the RAP and Postretirement Plan were as follows:
Three Months Ended Sep 30,Nine Months Ended Sep 30,
(in thousands)2026202520262025
RAP
Service cost$869 $636 $2,606 $2,255 
Interest cost2,749 3,027 8,248 8,655 
Expected return on plan assets(9,772)(9,832)(29,316)(29,450)
Amortization of prior service credit(44)(44)(133)(133)
Total net periodic pension benefit$(6,198)$(6,213)$(18,595)$(18,673)
Postretirement Plan
Interest cost$22 $26 $65 $78 
Amortization of prior service credit(19)(19)(56)(56)
Amortization of actuarial loss— 4 — 12 
Total net periodic cost$3 $11 $9 $34