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UNAUDITED SUPPLEMENTARY QUARTERLY INFORMATION
 12 Months Ended
Dec. 31, 2016
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 three years ended December 31, 2016, 2015, and 2014.
 
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


 
Three months ended
 
March 31, 2015
 
June 30, 2015
 
September 30, 2015
 
December 31, 2015
 
(unaudited) (in thousands, except share and per share amounts)
Net loss
$
(1,203
)
 
$
(4,060
)
 
$
(5,345
)
 
$
(71,609
)
Net loss per share
$
(0.06
)
 
$
(0.18
)
 
$
(0.12
)
 
$
(1.58
)
Weighted average shares outstanding
     Basic and Diluted
19,677,552

 
22,999,968

 
45,117,145

 
45,330,302


 
Three months ended
 
March 31, 2014
 
June 30, 2014
 
September 30, 2014
 
December 31, 2014
 
(unaudited) (in thousands, except share and per share amounts)
Net income (loss)
$
(6,671
)
 
$
(75,018
)
 
$
3,682

 
$
(8,628
)
Net income (loss) per share
$
(0.34
)
 
$
(3.81
)
 
$
0.19

 
$
(0.44
)
Weighted average shares outstanding
    Basic and Diluted
19,601,773

 
19,677,052

 
19,677,552

 
19,677,552