Quarterly Financial Data (unaudited) (Tables)
12 Months Ended
Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Data

The following table presents quarterly data for the years ended December 31, 2016 and 2015, in thousands, except per share data:

 

     2016  
     First
Quarter
     Second
Quarter
    Third
Quarter
    Fourth
Quarter
    Full Year  

Revenues

   $ 15,458      $ 595     $ 311     $ 983     $ 17,347  

Net income (loss)

   $ 4,750      $ (6,956 )    $ (6,004 )    $ (7,127 )    $ (15,337 ) 

Basic net income (loss) per common share

   $ 0.06      $ (0.08 )    $ (0.07 )    $ (0.08 )    $ (0.18 ) 

Diluted net income (loss) per common share

   $ 0.06      $ (0.08 )    $ (0.07 )    $ (0.10 )    $ (0.18 ) 

 

     2015  
     First
Quarter
    Second
Quarter
    Third
Quarter
    Fourth
Quarter
     Full Year  

Revenues

   $ 731     $ 216     $ 396     $ 10,605      $ 11,948  

Net income (loss)

   $ (12,482 )    $ (1,035 )    $ (6,497 )    $ 3,592      $ (16,422 ) 

Basic net income (loss) per common share

   $ (0.16 )    $ 0.01     $ (0.08 )    $ 0.04      $ (0.20 ) 

Diluted net income (loss) per common share

   $ (0.16 )    $ (0.05 )    $ (0.08 )    $ 0.04      $ (0.20 )