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Selected Quarterly Financial Data (Unaudited - in thousands except per share data) (Tables)
 12 Months Ended
Dec. 31, 2016
Selected Quarterly Financial Data (Unaudited - in thousands except per share data)  
Schedule of selected quarterly financial data

Selected Quarterly Financial Data (Unaudited—in thousands except per share data)

                                                                                                                                                                                    

 

 

Quarters Ended

 

 

 

March 31

 

June 30

 

September 30

 

December 31

 

2016

 

 

 

 

 

 

 

 

 

 

 

 

 

Net loss

 

$
(43,691

)

$
(51,050

)

$
(46,654

)

$
(58,647

)

Basic and diluted net loss per common share (1)

 

 
(0.35

)

 
(0.40

)

 
(0.33

)

 
(0.41

)

2015

 

 

 

 

 

 

 

 

 

 

 

 

 

Net loss

 

$
(24,288

)

$
(27,133

)

$
(37,800

)

$
(42,897

)

Basic and diluted net loss per common share (1)

 

 
(0.25

)

 
(0.27

)

 
(0.32

)

 
(0.34

)

 

 

 

(1)          

Per common share amounts for the quarters and full years have been calculated separately. Accordingly, quarterly amounts do not add to the annual amounts because of differences on the weighted-average common shares outstanding during each period principally due to the effect of the Company issuing shares of its common stock during the year.