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Cash Equivalents and Marketable Securities - Summary of Contractual Maturities of Marketable Securities at Estimated Fair Value (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]    
Due in one year or less $ 46,429 $ 56,178
Total marketable securities $ 46,429 $ 56,178