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Selected Balance Sheet Data
 9 Months Ended
Jun. 30, 2011
Selected Balance Sheet Data [Abstract]  
SELECTED BALANCE SHEET DATA
4. SELECTED BALANCE SHEET DATA
(in thousands)
                 
    June 30, 2011     September 30, 2010  
Accounts receivable, net:
               
Accounts receivable
  $ 28,016     $ 24,639  
Less allowance for doubtful accounts
    (297 )     (549 )
 
           
 
  $ 27,719     $ 24,090  
 
           
Inventories:
               
Raw materials
  $ 20,374     $ 21,678  
Work in process
    550       418  
Finished goods
    3,982       4,454  
 
           
 
  $ 24,906     $ 26,550  
 
           
Inventories are stated at the lower of cost or market value, with cost determined using the first-in, first-out method.