v3.26.1
Pension And Other Postretirement Benefit Plans (Tables)
3 Months Ended
Jun. 30, 2026
Retirement Benefits [Abstract]  
Components of Company's Net Periodic Benefit Cost
The components of the Company’s net periodic benefit cost were as follows:
Pension BenefitsOther Postretirement Benefits
Three Months Ended June 30,Three Months Ended June 30,
(in thousands of dollars)2026202520262025
Service cost$1,403 $1,252 $16 $17 
Interest cost2,350 2,267 266 262 
Expected return on plan assets(2,871)(3,027)(7)(11)
Net amortization and deferral323 83 (152)(160)
Net periodic benefit cost
$1,205 $575 $123 $108