XML 32 R20.htm IDEA: XBRL DOCUMENT v3.19.1
Equity Financings and Warrants (Tables)
3 Months Ended
Mar. 31, 2019
Equity [Abstract]  
Summary of Warrants by Year of Expiration

As of March 31, 2019, these warrants, by year of expiration, are summarized below:

 

Year of Expiration

 

Number

of Warrants

 

 

Weighted Average

Exercise Price

 

2020

 

 

2,461

 

 

$

287.28

 

2022

 

 

133,401

 

 

 

109.80

 

 

 

 

135,862

 

 

$

113.04