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Long-Term Debt (Tables)
 6 Months Ended
Jun. 30, 2013
Long-Term Debt [Abstract]  
Interest expense and amortization of debt issuance costs
Interest expense and amortization of debt issuance costs and discounts, recorded as other expense in the condensed consolidated statements of comprehensive loss for the three and six months ended June 30, 2013 and 2012 are shown below (in thousands):
 
 
 
Three Months Ended June 30,
  
Six Months Ended June 30,
 
 
 
2013
  
2012
  
2013
  
2012
 
Interest expense
 
  
  
  
 
GECC term loan
 
$
531
  
$
406
  
$
1,077
  
$
823
 
Servier loan
  
528
   
509
   
1,053
   
1,025
 
Novartis note
  
91
   
99
   
182
   
199
 
Other
  
14
   
11
   
24
   
21
 
Total interest expense
 
$
1,164
  
$
1,025
  
$
2,336
  
$
2,068