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Allowance for doubtful accounts
 12 Months Ended
Jun. 29, 2012
Allowance for doubtful accounts
7.   Allowance for doubtful accounts

The activities and balances for allowance for doubtful accounts for the years ended June 29, 2012, June 24, 2011 and June 25, 2010 were as follows:

 

     Balance
at
beginning
of period		      Charged
to
expense		      Balance at
end of
period		  

Year ended June 29, 2012

    $ 79       $ 124       $ 203   

Year ended June 24, 2011

    $ 41       $ 38       $ 79   

Year ended June 25, 2010

    $ 16       $ 25       $ 41