v3.26.3
Employee Benefits (Details) - Nordion - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Defined Benefit Pension Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 116 $ 126 $ 350 $ 371
Interest cost 2,280 2,405 6,913 7,105
Expected return on plan assets (4,145) (4,015) (12,563) (11,864)
Net periodic benefit cost (1,749) (1,484) (5,300) (4,388)
Other Benefits Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 1 1 3 4
Interest cost 75 79 227 234
Amortization of net actuarial gain (33) (18) (100) (54)
Net periodic benefit cost $ 43 $ 62 $ 130 $ 184