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Cash and Cash Equivalents - Additional Information (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Sep. 30, 2022
Cash And Cash Equivalents [Line Items]    
Cash and cash equivalents (amortized cost -$77,882 and $33,725, respectively) $ 100,555 $ 51,488
Money Market Funds    
Cash And Cash Equivalents [Line Items]    
Cash and cash equivalents (amortized cost -$77,882 and $33,725, respectively) $ 100,600 $ 51,500