Marketable Securities - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Marketable Securities [Abstract]
Marketable securities held			$ 0
Proceeds from sale of marketable securities	$ 56,200,000	$ 56,200,000	$ 0	$ 56,170,000	$ 1,521,000