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Pension - Net benefit income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jan. 29, 2022	Jan. 29, 2022
Pension
Expected return on plan assets	$ 30	$ 93
Interest cost	(14)	(44)
Foreign currency exchange rate changes	4	10
Net periodic benefit cost	$ 20	$ 59

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