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Retirement Plans -Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	157	167	316	334
Expected return on plan assets	(135)	(120)	(257)	(240)
Amortization and deferral	36	80	92	159
Net periodic benefit cost	58	127	151	253
International Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	252	256	507	499
Interest cost	457	444	927	876
Expected return on plan assets	(535)	(557)	(1,087)	(1,105)
Amortization and deferral	304	360	616	711
Net periodic benefit cost	$ 478	$ 503	$ 963	$ 981

X

- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

+ References

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-Publisher FASB
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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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