Segment Information And Enterprise Reporting (Schedule Of Revenue From External Customers And Long-Lived Assets, By Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 30, 2014		Aug. 24, 2013	May 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 143,447		$ 131,704
Long-Lived Assets	197,878	[1]		199,616	[1]
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	115,836		102,194
Long-Lived Assets	173,081	[1]		173,656	[1]
The Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	4,294		5,767
Long-Lived Assets	21,543	[1]		22,541	[1]
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	23,317		23,743
Long-Lived Assets	$ 3,254	[1]		$ 3,419	[1]

[1] Long-lived assets are comprised of goodwill, intangible assets and property and equipment.