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Accrued Expenses and Other Current Liabilities (Tables)
 12 Months Ended
Sep. 30, 2012
Accrued Expenses and Other Current Liabilities [Abstract]  
Accrued expenses and other current liabilities
                 
    AS OF
SEPTEMBER 30,		  
    2012     2011  

Employee bonuses

   $ 5,736     $ 4,167  

Product warranty

     2,308       2,123  

Compensated absences

     1,266       1,206  

Legal and professional fees

     502       475  

Payroll

     674       198  

Property taxes

     1,386       1,215  

Medical claims

     470       372  

Other

     1,636       1,628  
   

 

 

    

 

 

  
    $ 13,978     $ 11,384