Derivative Financial Instruments - Schedule of Offsetting Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Sep. 30, 2020
Derivative [Line Items]
Net Amounts of Liabilities Presented in the Consolidated Balance Sheets	$ 4,259	$ 1,073
Foreign Currency Forwards
Derivative [Line Items]
Gross Amount of Recognized Liabilities	4,259
Gross Amounts Offset in the Consolidated Balance Sheets	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheets	4,259
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	(4,259)
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Pledged	0
Net Amount	$ 0

Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

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