Inventories - Narrative (Details) - USD ($)	1 Months Ended	12 Months Ended
	Oct. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Inventory Disclosure [Abstract]
Proceeds from federal relief grants		$ 4,299,000	$ 4,629,000	$ 15,597,000
Insurance Expenses Incurred		$ 2,000,000,000
Insurance Reimbursement Received	$ 1,000,000,000