Derivative Financial Instruments - Schedule of Offsetting Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Gross Amount of Recognized Liabilities	$ 1,073
Gross Amounts Offset in the Consolidated Balance Sheets	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheets	1,073	$ 2,771
Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	(903)
Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Pledged	0
Net Amount	$ 170

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

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