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Segment Disclosure - Net Sales and Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 03, 2019	Jul. 28, 2018	Apr. 27, 2019
Net sales:
Net sales	$ 180,256	$ 154,188
Long-lived assets:
Long-lived assets	66,707		$ 65,314
United States
Net sales:
Net sales	149,460	121,325
Long-lived assets:
Long-lived assets	59,446		59,192
Outside United States
Net sales:
Net sales	30,796	$ 32,863
Long-lived assets:
Long-lived assets	$ 7,261		$ 6,122

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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