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Quarterly Financial Data (Unaudited) (Tables)
12 Months Ended
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]  
Summary of Quarterly Financial Data

The following table sets forth certain unaudited quarterly financial data for the eight quarters ended December 31, 2016.

 

 

 

 

2017

 

 

2016

 

 

 

Q1

 

 

Q2

 

 

Q3

 

 

Q4

 

 

Q1

 

 

Q2

 

 

Q3

 

 

Q4

 

Revenues

 

$

3,425

 

 

$

8,253

 

 

$

11,812

 

 

$

13,077

 

 

$

3,942

 

 

$

3,702

 

 

$

2,823

 

 

$

8,922

 

Expenses

 

$

20,217

 

 

$

21,021

 

 

$

24,847

 

 

$

26,843

 

 

$

20,623

 

 

$

30,544

 

 

$

22,029

 

 

$

18,752

 

Net loss

 

$

(16,632

)

 

$

(12,491

)

 

$

(12,354

)

 

$

(13,091

)

 

$

(16,494

)

 

$

(26,575

)

 

$

(18,965

)

 

$

(9,624

)

Net loss per share

 

$

(0.23

)

 

$

(0.17

)

 

$

(0.15

)

 

$

(0.15

)

 

$

(0.23

)

 

$

(0.38

)

 

$

(0.27

)

 

$

(0.14

)