XML 50 R48.htm IDEA: XBRL DOCUMENT v3.20.1
Stockholders' Equity - Warrant Activity (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Shares of Stock under Warrants    
Outstanding at January 1, 2019 (shares) 4,062,507  
Granted (shares) 32,023,503  
Exercised (shares) (11,678,458)  
Canceled (shares) (1,502)  
Outstanding at December 31, 2019 (shares) 24,406,050 4,062,507
Weighted- Average Exercise Price    
Outstanding at January 1, 2019 (USD per share) $ 6.32  
Granted (USD per share) 0.07  
Exercised (USD per share) 0.57  
Canceled (USD per share) 59.90  
Outstanding at December 31, 2019 (USD per share) $ 1.76 $ 6.32
Weighted- Average Remaining Contractual Term    
Outstanding at January 1, 2019 4 years 9 months 25 days 4 years 8 months 1 day
Granted 4 years 10 months 2 days  
Outstanding at December 31, 2019 4 years 9 months 25 days 4 years 8 months 1 day
Aggregate Intrinsic Value    
Exercised $ 10,457,345  
Outstanding at December 31, 2019 $ 7,932,689