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Postretirement and Other Employee Benefits (Tables)
3 Months Ended
Sep. 30, 2020
Retirement Benefits [Abstract]  
Components of Net Periodic Pension Costs for the Swiss Pension Plan Net periodic pension costs for the Swiss pension plans included the following components:
Three Months Ended September 30,
20202019
(in thousands)
Components of net periodic cost
Service cost$765 $724 
Interest cost37 56 
Prior service credit(83)(77)
Net actuarial loss61 118 
Expected return on plan assets(285)(307)
Net periodic cost$495 $514