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Long Term Debt (Tables)
 12 Months Ended
Dec. 31, 2012
Long-Term Debt [Abstract]  
Schedule of Long-Term Debt
                 
    December 31,  
    2012     2011  
    (in thousands)  

Series A Term Note, maturing on February 25, 2014, due in annual payments of $2.1 million that began February 25, 2008, plus interest at 10.50% paid quarterly, on February 25, May 25, August 25 and November 25, collateralized by accounts receivable, inventory and certain equipment

   $ 4,286     $ 6,429  

Series B Term Note, maturing on June 21, 2014, due in annual payments of $1.5 million that began June 21, 2008, plus interest at 10.22% paid quarterly, on March 21, June 21, September 21 and December 21, collateralized by accounts receivable, inventory and certain equipment

     3,000       4,500  

Series C Term Note, maturing on October 26, 2014, due in annual payments of $1.4 million that began October 26, 2008, plus interest at 9.11% paid quarterly, on January 26, April 26, July 26 and October 26, collateralized by accounts receivable, inventory and certain equipment

     2,857       4,286  

Series D Term Note, maturing on January 24, 2015, due in annual payments of $643,000 that began January 24, 2009, plus interest at 9.07% paid quarterly, on January 24, April 24, July 24 and October 24, collateralized by accounts receivable, inventory and certain equipment

     1,928       2,570  
   

 

 

    

 

 

  

Total long-term debt

   $ 12,071     $ 17,785  
   

 

 

    

 

 

  

Amounts are presented in the Consolidated Balance Sheets as follows:

                

Current portion of long-term debt

   $ 5,714     $ 5,714  

Long-term debt, less current portion

     6,357       12,071  
   

 

 

    

 

 

  
    $ 12,071     $ 17,785  
   

 

 

    

 

 

  
Future principal payments of long-term debt

Future principal payments of long-term debt are as follows (in thousands):

 

         

2013

   $ 5,714  

2014

     5,714  

2015

     643  

2016

     —    

2017

     —    

Thereafter

     —    
   

 

 

  
    $ 12,071