Subsequent Events - Additional Information (Details) - USD ($)		3 Months Ended		9 Months Ended
	Oct. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Subsequent Event [Line Items]
Gain on sale of real estate, property and equipment and assets held for sale	$ 18,230,000	$ 30,288,000	$ 154,000	$ 33,635,000	$ 3,017,000