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Marketable Securities - Additional Information (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]    
Unrealized loss position for a period longer than twelve months $ 0  
Allowance for credit losses 0  
Impairment charges 0 $ 0
Gross realized gain related to the sale of marketable securities $ 0 $ 0