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Other Current Assets
 12 Months Ended
Oct. 31, 2011
Other Current Assets [Abstract]  
Other Current Assets
Note 7. Other Current Assets
Other current assets at October 31, 2011 and October 31, 2010 consisted of the following:
                 
    2011     2010  
 
               
Advance payments to vendors (1)
  $ 4,378     $ 4,033  
Interest receivable (2)
    48       55  
Note receivable (3)
    804       —  
Prepaid expenses and other (4)
    2,236       1,165  
 
           
Total
  $ 7,466     $ 5,253  
 
           
 
     
(1)  
Advance payments to vendors relate to inventory purchases. The October 31, 2010 amount has been reduced by a lower of cost or market adjustment $0.1 million. There was no lower of cost or market adjustment at October 31, 2011
 
(2)  
Interest receivable relates to amounts due on investments in U.S. Treasury securities.
 
(3)  
Current portion of long-term note receivable.
 
(4)  
Primarily relates to other accounts receivable related to POSCO royalties and other prepaid vendor expenses including insurance, rent and lease payments.