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Investments - Narrative (Details) - USD ($)
1 Months Ended 9 Months Ended
Dec. 31, 2021
Apr. 30, 2020
Sep. 30, 2022
Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]        
Debt securities, available-for-sale, excluding accrued interest, allowance for credit loss, not previously recorded     $ 0  
Variable Interest Entity [Line Items]        
Cash distributions received $ 12,900,000      
Navitor Pharmaceuticals, Inc. | Variable Interest Entity, Not Primary Beneficiary        
Variable Interest Entity [Line Items]        
Agreement termination notice period   30 days    
Threshold for development costs payments   $ 50,000,000    
Investments   $ 15,000,000   $ 15,000,000
VIE, qualitative or quantitative information, ownership percentage   13.00%