Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Fair Value Measurements - Estimated Fair Value of Equity Securities Assumptions (Details)
 1 Months Ended 12 Months Ended
Jan. 07, 2019
shares
Mar. 31, 2018
shares
Dec. 31, 2019
shares
Mar. 31, 2021
Y
$ / shares
item
Dec. 31, 2020
Y
$ / shares
Common Stock Purchase Agreement | Rezolute          
Fair Value Measurements          
Number of Rezolute's shares Company has right and option to sell | shares 5,000,000 5,000,000 100,000    
Number of tranches | item       2  
Closing common stock price | OTC exchange          
Fair Value Measurements          
Valuation assumptions, measurement input | $ / shares       7.06 11.99
Discount for lack of marketability | Tranche 1          
Fair Value Measurements          
Valuation assumptions, measurement input       0.105 0.12
Discount for lack of marketability | Tranche 2          
Fair Value Measurements          
Valuation assumptions, measurement input       11 0.14
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       0.53 0.67