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Pension and Other Postretirement Benefits (Tables)
9 Months Ended
Mar. 31, 2021
Pension Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Net periodic pension (income)
The table below summarizes the components of net periodic pension income:
Three Months Ended March 31,Nine Months Ended March 31,
(in thousands)2021202020212020
Service cost$429 $452 $1,264 $1,346 
Interest cost5,815 6,848 17,371 20,504 
Expected return on plan assets(13,459)(13,539)(40,171)(40,491)
Amortization of transition obligation24 23 70 67 
Amortization of prior service cost13 25 38 
Recognition of actuarial losses3,431 2,597 10,190 7,777 
Settlement gain— — — (122)
Net periodic pension income$(3,752)$(3,606)$(11,251)$(10,881)
Other Postretirement Benefits Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Net periodic pension (income)
The table below summarizes the components of net periodic other postretirement benefit cost:
Three Months Ended March 31,Nine Months Ended March 31,
(in thousands)2021202020212020
Interest cost$76 $101 $230 $303 
Amortization of prior service credit(69)(69)(207)(207)
Recognition of actuarial loss77 64 230 193 
Net periodic other postretirement benefit cost$84 $96 $253 $289