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Unaudited Quarterly Results (unaudited)
 12 Months Ended
Dec. 31, 2014
Unaudited Quarterly Results (unaudited) [Abstract]  
Unaudited Quarterly Results (unaudited)
14. Unaudited Quarterly Results (unaudited)

Summarized quarterly financial data during 2014 and 2013 are as follows:

  
2014 Quarter Ended
 
  
March 31
  
June 30
  
September 30
  
December 31
 
Revenues (losses) (1)
 
$
1,815
  
$
1,477
  
$
41,656
  
$ 
(571
)
Net income (loss)
  
(9,313
)
  
(11,073
)
  
36,975
   
(12,179
)
Net income (loss) per share - basic
  
(0.15
)
  
(0.17
)
  
0.53
   
(0.18
)
Net income (loss) per share - diluted
  
(0.15
)
  
(0.17
)
  
0.51
   
(0.18
)

  
2013 Quarter Ended
 
  
March 31
  
June 30
  
September 30
  
December 31
 
Revenues
 
$
2,226
  
$
1,801
  
$
867
  
$
2,968
 
Net loss
  
(11,258
)
  
(12,263
)
  
(10,500
)
  
(8,551
)
Net loss per share - basic and diluted
  
(0.22
)
  
(0.24
)
  
(0.17
)
  
(0.14
)
                _______________

(1)
    Revenues in the first and third quarters of 2014 include $1.0 million milestone revenue from Fuji and $40.0 million milestone revenue from Salix, respectively.