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UNAUDITED SUPPLEMENTARY QUARTERLY INFORMATION
 12 Months Ended
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Unaudited Supplementary Quarterly Information
UNAUDITED SUPPLEMENTARY QUARTERLY INFORMATION
The following table summarizes unaudited supplementary quarterly information for the two years ended December 31, 2017, and 2016:



 
Three months ended
 
March 31, 2017
 
June 30, 2017
 
September 30, 2017
 
December 31, 2017
 
(unaudited) (in thousands, except share and per share amounts)
Net loss
$
(10,596
)
 
$
(4,480
)
 
$
(4,884
)
 
$
(8,030
)
Net loss per share
$
(0.15
)
 
$
(0.06
)
 
$
(0.07
)
 
$
(0.11
)
Weighted average shares outstanding
     Basic and Diluted
70,220

 
70,567

 
71,963

 
74,367


 
Three months ended
 
March 31, 2016
 
June 30, 2016
 
September 30, 2016
 
December 31, 2016
 
(unaudited) (in thousands, except share and per share amounts)
Net loss
$
(8,865
)
 
$
(10,441
)
 
$
(8,245
)
 
$
(12,313
)
Net loss per share
$
(0.19
)
 
$
(0.20
)
 
$
(0.14
)
 
$
(0.19
)
Weighted average shares outstanding
     Basic and Diluted
47,660,414

 
53,043,512

 
58,630,457

 
66,205,153