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Selected Quarterly Financial Data (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2017
Selected Quarterly Financial Information [Abstract]  
Schedule of quarterly financial information
Selected quarterly financial data for the years ended December 31, 2017 and 2016 is as follows (in thousands, except for share and per share data):
 
Three Months Ended
 
March 31,
 
June 30,
 
September 30,
 
December 31,
2017:
 

 
 

 
 

 
 

Net revenue
$
—

 
$
980

 
$
13,469

 
$
7,663

Gross profit
—

 
875

 
13,016

 
6,889

Net loss
(56,939
)
 
(68,438
)
 
(57,843
)
 
(71,017
)
Net loss applicable to common stock
(56,939
)
 
(68,438
)
 
(57,843
)
 
(71,017
)
Net loss per share—basic and diluted
(1.32
)
 
(1.58
)
 
(1.31
)
 
(1.59
)
Weighted-average common shares outstanding—basic and diluted
43,185,952

 
43,410,053

 
43,999,451

 
44,602,254

 
 
 
 
 
 
 
 
2016:
 

 
 

 
 

 
 

Net loss
$
(40,463
)
 
$
(43,435
)
 
$
(46,186
)
 
$
(52,720
)
Net loss applicable to common stock
(40,463
)
 
(43,435
)
 
(46,186
)
 
(52,720
)
Net loss per share—basic and diluted
(0.94
)
 
(1.01
)
 
(1.07
)
 
(1.22
)
Weighted-average common shares outstanding—basic and diluted
43,012,924

 
43,042,883

 
43,092,921

 
43,122,210