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Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 29, 2017	Apr. 28, 2018
Fiscal 2018 Acquisitions
Fair values at the dates of acquisition
Current assets		$ 595
Goodwill and other intangible assets		255
Total assets acquired		850
Current liabilities acquired		(234)
Total liabilities		(234)
Total purchase price		$ 616
Fiscal 2017 Acquisitions
Fair values at the dates of acquisition
Current assets	$ 12,175
Goodwill and other intangible assets	46,921
Property, plant and equipment	1,106
Total assets acquired	60,202
Current liabilities acquired	(4,023)
Purchase price liability	(15,103)
Contingent consideration liability	(1,204)
Total liabilities	(20,330)
Total purchase price	$ 39,872

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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