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Cash Equivalents and Marketable Securities - Contractual Maturities of Marketable Securities at Estimated Fair Value (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Cash and Cash Equivalents [Abstract]    
Due in one year or less $ 102,518 $ 20,848
Due thereafter 10,489 0
Total marketable securities $ 113,007 $ 20,848