Contingent Liabilities (Details) (USD $)	6 Months Ended
	Nov. 30, 2011	Jul. 01, 2011
Contingent Liabilities [Line Items]
Breach of contract date	March 1, 2007
Amount paid to resolve preexisting relationship with seller		$ 10,000,000
Reserves recognized prior to closing		14,402,000
Bernz [Member]
Contingent Liabilities [Line Items]
Cash consideration for acquisition of Bernz		$ 41,000,000