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Long-Term Debt (Details) (USD $)
 12 Months Ended
May 31, 2014
Jun. 01, 2013
Line of Credit Facility    
Long-term Debt, Current Maturities $ 50,000,000 $ 0
Leverage Ratio 350.00%  
Interest Coverage 400.00%  
Long-term debt 250,000,000 250,000,000
Series A Senior Notes
    
Line of Credit Facility    
Long-term Debt, Current Maturities 50,000,000 50,000,000
Revolving Line of Credit, Foreign
    
Line of Credit Facility    
Line of Credit Facility, Current Borrowing Capacity 5,000,000  
Line of Credit Facility, Amount Outstanding 0  
Line of Credit
    
Line of Credit Facility    
Line of Credit Facility, Current Borrowing Capacity 150,000,000  
Line of Credit Facility, Expansion Feature, Additional Borrowing Capacity 75,000,000  
Line of Credit Facility, Amount Outstanding $ 4,900,000 $ 7,700,000