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Long Term Debt - Additional Information (Detail) (USD $)
12 Months Ended
May 30, 2014
Debt Instrument [Line Items]  
Unsecured revolving line of credit, total amount available $ 12,000,000
Unsecured revolving line of credit, maturity date Sep. 01, 2017
Unsecured revolving line of credit, interest terms LIBOR plus 100 basis points
Unsecured revolving line of credit, spread 1.00%
Unsecured revolving line of credit, interest rate 1.15%
Before Amendment
 
Debt Instrument [Line Items]  
Unsecured revolving line of credit, maturity date Sep. 01, 2014