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License Agreement (Details) - USD ($)
1 Months Ended 3 Months Ended 52 Months Ended
Dec. 31, 2017
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Dec. 31, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Research and development   $ 9,278,000 $ 5,472,000    
vTv Therapeutics          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Milestone payments   $ 0 $ 0 $ 0 $ 2,000,000.0
Milestone payments payable on achievement of sales thresholds of the licensed product $ 30,000,000.0        
Research and development | vTv Therapeutics          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Upfront license fee payment $ 64,500,000     $ 3,000,000.0  
Common stock issued, Shares 576,443