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Commitments and Contingencies - Additional Information (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Oct. 09, 2020
Aug. 10, 2020
Mar. 31, 2021
Jun. 30, 2021
Dec. 31, 2020
Arctic Vision License Agreement          
Upfront payment received   $ 4,000,000.0      
Deferred license fees     $ 2,000,000.0 $ 2,000,000.0  
Deferred license cost     800,000 800,000  
Maximum additional payments receivable   41,750,000      
Royalty payments earned       0  
Milestone payments earned         $ 2,000,000.0
Bausch License Agreement          
Upfront payment received $ 10,000,000.0        
Maximum additional payments receivable $ 35,000,000.0        
Royalty payments earned       0  
Milestone payments earned       $ 0  
Senju License Agreement          
Upfront payment received     $ 4,000,000.0    
Deferred license fees   $ 4,000,000.0