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Prepaid Expenses and Other Current Assets (Tables)
9 Months Ended
Sep. 30, 2012
Prepaid Expenses and Other Current Assets [Abstract]  
Components of prepaid expenses and other current assets
                 
    September 30,
2012
    December 31,
2011
 
    (in thousands)  

Prepaid corporate insurance

  $ 27     $ 35  

Deposit on inventory

    399       420  

Prepaid expenses and other current assets

    109       126  
   

 

 

   

 

 

 
    $ 535     $ 581