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Marketable Securities - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Investments, Debt and Equity Securities [Abstract]        
Unrealized loss position for a period longer than twelve months $ 0   $ 0  
Allowance for credit losses 0   0  
Impairment charges 0 $ 0 0 $ 0
Gross realized gain related to the sale of marketable securities $ 0 $ 35,000 $ 0 $ 35,000