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Accounts Receivable
9 Months Ended
Nov. 25, 2011
Accounts Receivable [Abstract]  
Accounts Receivable
4.    Accounts Receivable
 
The components of accounts receivable are as follows:

   
November 25,
2011
(unaudited)
  
February 25,
2011
 
U.S. government
 $2,887  $1,936 
U.S. commercial
  2,274   1,295 
International
  4,827   1,895 
    9,988   5,126 
Less: allowance for doubtful accounts
  (425)  (399)
   $9,563  $4,727