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Accounts Receivable
 6 Months Ended
Jun. 30, 2015
Receivables [Abstract]  
Accounts Receivable

3.            Accounts Receivable

 

Accounts receivables consist of the following at:

 

 

(Dollars in thousands)

   June 30, 2015     December 31, 2014  
                 
U.S. and State Government   $ 14     $ 3  
Commercial     1,165       1,193  
Allowance for doubtful accounts     (25 )     —  
  Total   $ 1,154     $ 1,196  

 

For the six months ended June 30, 2015 and 2014, the largest commercial customer represented 6.7% and 14.0%, respectively, and the largest governmental agency represented 3.6% and 22.5%, respectively, of the Company’s product revenue. As of June 30, 2015 and December 31, 2014, the largest commercial receivable represented 16.6% and 9.1%, respectively, and the largest governmental receivable represented 1.2% and 0.2%, respectively, of the Company’s accounts receivable.