Goodwill and Other Intangible Assets - Intangible Assets (Details) $ in Thousands	3 Months Ended
	Jul. 28, 2018 USD ($)
Roll-forward of other intangible assets
Balance at beginning of period	$ 18,190
Amortization	(104)
Translation adjustment	(212)
Balance at end of period	17,874
Other Intangible Assets
Roll-forward of other intangible assets
Balance at beginning of period	3,390
Amortization	(104)
Translation adjustment	(164)
Balance at end of period	3,122
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
Translation adjustment	(48)
Balance at end of period	$ 13,597