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Cash, Cash Equivalents and Restricted Cash - Summary of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Cash And Cash Equivalents [Abstract]    
Cash and cash equivalents $ 75,503 $ 60,161
Restricted cash 102 18
Cash, cash equivalents and restricted cash $ 75,605 $ 60,179