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Retirement Plans - (Net Periodic Benefit Cost) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2019
Dec. 30, 2018
Dec. 31, 2019
Dec. 30, 2018
United States Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 0 $ 0 $ 0 $ 0
Interest cost 154 157 462 473
Expected return on plan assets (110) (128) (336) (385)
Amortization and deferral 38 46 141 138
Net periodic benefit cost 82 75 267 226
International Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 229 246 691 753
Interest cost 375 449 1,115 1,376
Expected return on plan assets (542) (526) (1,598) (1,613)
Amortization and deferral 253 299 751 915
Net periodic benefit cost $ 315 $ 468 $ 959 $ 1,431