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Financial Instruments and Hedging Activities - Quantitative Summary of Fair Value of Derivative Instruments (Details) - Foreign currency forward contracts - USD ($)
$ in Thousands
Dec. 31, 2021
Sep. 30, 2021
Prepaid expenses and other current assets    
Derivatives, Fair Value [Line Items]    
Fair Value Assets $ 129 $ 112
Accrued expenses and other current liabilities    
Derivatives, Fair Value [Line Items]    
Fair Value Liabilities $ (105) $ (49)