Goodwill and Other Intangible Assets - Intangible Assets (Details) $ in Thousands	9 Months Ended
	Jan. 26, 2019 USD ($)
Roll-forward of other intangible assets
Balance at beginning of period	$ 18,190
Acquisitions	13,000
Amortization	(688)
Translation adjustment	(228)
Balance at end of period	30,274
Trade Names
Roll-forward of other intangible assets
Acquisitions	6,400
Amortization	(399)
Balance at end of period	6,001
Other Intangible Assets
Roll-forward of other intangible assets
Balance at beginning of period	3,390
Amortization	(289)
Translation adjustment	(147)
Balance at end of period	2,954
Trade Names
Roll-forward of other intangible assets
Balance at beginning of period	1,155
Balance at end of period	1,155
Reacquired Rights
Roll-forward of other intangible assets
Balance at beginning of period	13,645
Acquisitions	6,600
Translation adjustment	(81)
Balance at end of period	$ 20,164