Income Taxes - Additional information (Details) - USD ($)		1 Months Ended	12 Months Ended
	Jan. 01, 2018	Dec. 31, 2017	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2020
Operating Loss Carryforwards [Line Items]
Increase (decrease) in valuation allowance			$ 21,200,000	$ 16,300,000
Unrecognized tax benefits			$ 1,856,629	$ 1,856,629			$ 1,856,629
U.S. federal statutory rate	(21.00%)	(34.00%)	(21.00%)	(21.00%)	(21.00%)	(24.30%)
Federal
Operating Loss Carryforwards [Line Items]
NOL carryforwards			$ 339,900,000
Tax credit carryforward			10,400,000
State
Operating Loss Carryforwards [Line Items]
NOL carryforwards			175,700,000
Tax credit carryforward			800,000
Foreign
Operating Loss Carryforwards [Line Items]
Tax credit carryforward			2,400,000
Unrecognized tax benefits			$ 1,900,000