Derivative Financial Instruments - Schedule of Offsetting Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Sep. 30, 2020
Derivative [Line Items]
Net Amounts of Assets Presented in the Consolidated Balance Sheets	$ 6,846	$ 903
Foreign Currency Forwards
Derivative [Line Items]
Gross Amount of Recognized Assets	5,884
Gross Amounts Offset in the Consolidated Balance Sheets	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets	5,884
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	(4,259)
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received	0
Net Amount	$ 1,625

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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