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Fair Value of Financial Instruments - Additional Information (Details) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying amount of notes payable $ 10,100,000  
Financial liabilities 0 $ 0
Fair Value Measured Using Net Asset Value | Money Market Funds    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Investments in money market funds $ 66,600,000 $ 17,400,000