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License Agreements - Hawkeye (Details) - USD ($)
1 Months Ended 12 Months Ended
Jun. 30, 2019
Dec. 31, 2020
Feb. 04, 2020
Dec. 31, 2019
Variable Interest Entity [Line Items]        
Common stock, par value (in USD per share)   $ 0.0001 $ 0.0001 $ 0.0001
Hawkeye        
Variable Interest Entity [Line Items]        
Number of shares held in VIE (in shares) 995,000      
Ownership percentage of VIE 19.90%      
Collaboration agreement, threshold of proceeds from stock issuance for additional consideration $ 5,000,000.0      
Collaborative arrangement, numerator for determining additional consideration $ 2,000,000      
Payments, milestones or royalties   $ 0    
Hawkeye        
Variable Interest Entity [Line Items]        
Common stock, par value (in USD per share) $ 0.0001