v2.4.0.6
Fair Value of Financial Instruments - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 29, 2012
Jun. 30, 2012
Fair Value Measurements Of Financial Instruments [Line Items]    
Short-term investments $ 7,965 $ 25,599
Portfolio [Member]
   
Fair Value Measurements Of Financial Instruments [Line Items]    
Short-term investments $ 7,965