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Investments Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, Level 1, USD $)
In Thousands, unless otherwise specified
Dec. 01, 2012
Jun. 02, 2012
Fair Value, Measurements, Recurring | Level 1
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Time deposits/CDs $ 93,369 $ 115,318
Equity securities 406 374
Fair value, Total $ 93,775 $ 115,692