Goodwill and Other Intangible Assets - Intangible Assets (Details) $ in Thousands	3 Months Ended
	Jul. 29, 2017 USD ($)
Roll-forward of other intangible assets
Balance at beginning of period	$ 18,489
Amortization	(361)
Translation adjustment	310
Balance at end of period	18,438
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	13,747
Amortization	(261)
Translation adjustment	260
Balance at end of period	13,746
Other Intangible Assets
Roll-forward of other intangible assets
Balance at beginning of period	3,587
Amortization	(100)
Translation adjustment	50
Balance at end of period	$ 3,537