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Inventories (Tables)
9 Months Ended
Sep. 30, 2013
Inventories [Abstract]  
Schedule of inventories
 
Inventories consist of:
(in thousands)
 
September 30, 2013
  
December 31, 2012
 
Raw materials
 
$
241
  
$
197
 
Work-in-process
  
791
   
405
 
Finished goods
  
263
   
503
 
Total inventory, gross
  
1,295
   
1,105
 
Inventory reserves
  
(332
)
  
 
Total inventory, net
 
$
963
  
$
1,105