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Accounts Receivable, net
 12 Months Ended
Dec. 31, 2013
Accounts Receivable, net  
Accounts Receivable, net

Note 5.  Accounts Receivable, net

        The components of accounts receivable are as follows:

 
   December 31,  
 
   2013   2012  
 
   (in thousands)
  

Trade receivables

   $ 36,991   $ 25,148  

Allowance for doubtful accounts

     (404 )   (305 )
           
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   $ 36,587   $ 24,843  
           
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