Summary of Significant Accounting Policies - Fair Value, Warranty and Self-Insurance Reserves (Details) - USD ($)	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Warranty Reserve
Standard warranty period	24 months
Self-Insurance Reserves
Estimated liability for medical claims incurred but not reported	$ 62,300	$ 51,600
Excess of funded premiums over estimated claims incurred but not reported	382,000
Fair Value, Measurements, Recurring | Quoted Price in Active Markets for Identical Assets (Level 1) | Money Market Funds
Assets
Cash and cash equivalents	$ 3,665,128	$ 16,083,571