Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Fair Value Measurements - Estimated Fair Value of Equity Securities Assumptions (Details)
 12 Months Ended
Dec. 06, 2017
shares
Dec. 31, 2019
Y
$ / shares
shares
Jun. 30, 2020
Y
$ / shares
item
Rezolute      
Fair Value Measurements      
Number of tranches | item     2
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 5,000,000  
Closing common stock price | OTC exchange      
Fair Value Measurements      
Valuation assumptions, measurement input | $ / shares   0.12 0.09
Discount for lack of marketability | Tranche 1      
Fair Value Measurements      
Valuation assumptions, measurement input   0.13 0.15
Discount for lack of marketability | Tranche 2      
Fair Value Measurements      
Valuation assumptions, measurement input   0.33 36
Estimated time to liquidity of shares | Tranche 1      
Fair Value Measurements      
Valuation assumptions, measurement input   0.25 0.25
Estimated time to liquidity of shares | Tranche 2      
Fair Value Measurements      
Valuation assumptions, measurement input   1.5 1.5