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Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Revenue Recognition    
Contract assets $ 0 $ 0
Contract liabilities $ 0 0
Sales return period prior to expiry date 6 months  
Sales return period subsequent to expiry date 12 months  
License and collaboration agreements    
Revenue Recognition    
Minimum guaranteed amounts owed to company $ 0 0
Royalty revenue agreements    
Revenue Recognition    
Minimum guaranteed amounts owed to company $ 0 $ 0
Maximum    
Revenue Recognition    
Product shelf life 48 months