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Quarterly Financial Data (unaudited)
12 Months Ended
Dec. 31, 2014
Quarterly Financial Data (unaudited) [Abstract]  
Quarterly Financial Data (unaudited)
16. Quarterly Financial Data (unaudited)
 
Summarized quarterly financial data for 2014 and 2013 is as follows (in thousands, except per share data):
 
   
Quarters Ended
 
   
March 31
  
June 30
  
September 30
  
December 31
 
   
(In thousands, except per share data)
 
2014
            
Total revenues
 $  $  $  $100 
Net income (loss)
 $4,665  $(15,719) $(5,625) $(13,439)
Basic income (loss) per share applicable to common stock
 $0.09  $(0.28) $(0.10) $(0.24)
         Diluted income (loss) per share applicable to common stock
 $0.08  $(0.28) $(0.10) $(0.24)
                  
2013
                
Total revenues
 $  $200  $  $100 
Net loss
 $(6,864) $(3,423) $(9,980) $(27,218)
Basic and diluted loss per share applicable to common stock
 $(0.23) $(0.11) $(0.33) $(0.68)

Quarterly and year-to-date loss per share amounts are computed independently of each other. Therefore, the sum of the per share amounts for the quarters may not agree to the per share amounts for the year.