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Segment and Enterprise Wide Disclosures (Tables)
9 Months Ended
Jun. 30, 2012
Segment and Enterprise Wide Disclosures [Abstract]  
Operations by geographic area
                                 
    Three Months Ended
June 30,
    Nine Months Ended
June 30,
 
    2012     2011     2012     2011  

Net Sales to Unaffiliated Customers

       

United States

  $ 132,010     $ 139,801     $ 393,498     $ 397,319  

Foreign

    6,837       6,883       19,491       18,633  

 

                 
    June 30,
2012
    September 30,
2011
 

Long-Lived Assets, Net

               

United States

  $ 51,496     $ 55,497  

Foreign

    1,033       1,605