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Quarterly Financial Data (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2015
Quarterly Financial Data [Abstract]  
Summary of Quarterly Financial Data

The following financial information reflects all normal recurring adjustments, which are, in our opinion, necessary for a fair statement of the results of the interim periods. Summarized quarterly data for 2015 and 2014 are as follows (in thousands, except per share data):

 

 

 

For the quarters ended

 

 

 

March 31

 

 

June 30

 

 

September 30

 

 

December 31

 

2015:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operating expenses

 

$

8,922

 

 

$

10,898

 

 

$

11,313

 

 

$

16,483

 

Net loss

 

 

(9,071

)

 

 

(11,080

)

 

 

(11,329

)

 

 

(16,493

)

Basic and diluted net loss per share

 

$

(9.39

)

 

$

(0.74

)

 

$

(0.48

)

 

 

(0.70

)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2014:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operating expenses

 

$

5,930

 

 

$

5,363

 

 

$

6,231

 

 

$

6,030

 

Net loss

 

 

(6,093

)

 

 

(5,588

)

 

 

(6,631

)

 

 

(6,038

)

Basic and diluted net loss per share

 

$

(7.87

)

 

$

(6.85

)

 

$

(8.02

)

 

$

(7.04

)