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Summary of Significant Accounting Policies - Property and Equipment, Contract balances, Income taxes, Warranty Reserve and Self-insurance reserves (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Contract Balances |  |
Balance at beginning of the period (Contract Assets) | $ 487,139 | $ 162,742
Balance at beginning of the period (Contract Liabilities) | 143,359 | 259,183
Amount transferred to receivables from contract assets | (373,139) |
Contract asset additions | 1,566,060 | 324,397
Performance obligations satisfied during the period that were included in the contract liability balance at the beginning of the period (Contract Liabilities) | (122,541) | (240,944)
Increases due to invoicing prior to satisfaction of performance obligations (Contract Liabilities) | 319,663 | 125,120
Balance at end of the period (Contract Assets) | 1,680,060 | 487,139
Balance at end of the period (Contract Liabilities) | $ 340,481 | 143,359
Warranty Reserve |  |
Standard warranty period | 24 months |
Self-Insurance Reserves |  |
Estimated liability for medical claims incurred but not reported | $ 98,300 | $ 62,300
Excess of funded premiums over estimated claims incurred but not reported | $ 36,400 |
Buildings and improvements | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 10 years |
Buildings and improvements | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 39 years |
Furniture and office equipment | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 5 years |
Furniture and office equipment | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 7 years |
Computer equipment |  |
Property and Equipment |  |
Estimated useful lives | 5 years |
Equipment | Minimum |  |
Property and Equipment |  |
Estimated useful lives | 1 year |
Equipment | Maximum |  |
Property and Equipment |  |
Estimated useful lives | 19 years |

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