Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Estimated Fair Value of Equity Securities Assumptions (Details)

v3.20.1
Fair Value Measurements - Estimated Fair Value of Equity Securities Assumptions (Details)
 12 Months Ended
Dec. 31, 2019
Y
$ / shares
item
shares
Dec. 31, 2018
item
Y
Fair Value Measurements    
Valuation assumptions, measurement input | Y   1.45
Number of tranches 2  
License Agreement and Common Stock Purchase Agreement | Rezolute    
Fair Value Measurements    
Number of Rezolute's shares Company has right and option to sell if Rezolute does not list common stock shares on national exchange | shares 5,000,000  
Closing common stock price | OTC exchange    
Fair Value Measurements    
Valuation assumptions, measurement input | $ / shares 0.12  
Discount for lack of marketability    
Fair Value Measurements    
Valuation assumptions, measurement input   0.35
Discount for lack of marketability | Tranche 1    
Fair Value Measurements    
Valuation assumptions, measurement input 0.13  
Discount for lack of marketability | Tranche 2    
Fair Value Measurements    
Valuation assumptions, measurement input 0.33  
Estimated time to liquidity of shares | Tranche 1    
Fair Value Measurements    
Valuation assumptions, measurement input | Y 0.25  
Estimated time to liquidity of shares | Tranche 2    
Fair Value Measurements    
Valuation assumptions, measurement input | Y 1.5  
Liquidation    
Fair Value Measurements    
Valuation assumptions, measurement input   0.20
Near-term sale    
Fair Value Measurements    
Valuation assumptions, measurement input   0.05
Near-term financing    
Fair Value Measurements    
Valuation assumptions, measurement input   0.75