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v3.22.2

Summary of Significant Accounting Policies (Details) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2020 USD ($) | Jun. 30, 2022 USD ($) segment | Jun. 30, 2021 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($)
Number of business segments |  |  |  |  |  |  |
Number of business segments in which the entity operates | segment |  |  |  | 1 |  |  |
Long-Lived Assets |  |  |  |  |  |  |
Impairment charges | $ 0 | $ 0 |  | $ 0 | $ 0 |  |
Contract Balances |  |  |  |  |  |  |
Balance at beginning of the period (contract liabilities) |  |  |  | 417,504 |  |  |
Amount transferred to receivables from contract assets |  |  |  | 0 |  |  |
Contract asset additions |  |  |  | 0 |  |  |
Performance obligations satisfied during the period that were included in the contract liability balance at the beginning of the period |  |  |  | (316,320) |  |  |
Increases due to invoicing prior to satisfaction of performance obligations |  |  |  | 227,932 |  |  |
Balance at end of the period (contract liabilities) | 329,116 |  |  | 329,116 |  |  |
Customer Service Revenue |  |  |  |  |  |  |
Customer Service Cost of Sales | 2,879,462 | 2,825,681 |  | 8,270,729 | 7,348,364 |  |
Gross profit | 4,056,514 | 3,354,502 |  | $ 12,206,845 | 8,823,316 |  |
Engineering Development |  |  |  |  |  |  |
Percentage of employees who were engineers engaged in various engineering development projects |  |  |  | 19.00% |  |  |
Warranty |  |  |  |  |  |  |
Length of warranty period |  |  |  | 24 months |  |  |
Self-Insurance Reserves |  |  |  |  |  |  |
Estimated liability for medical claims incurred but not reported | 57,274 |  |  | $ 57,274 |  | $ 55,934 |
Excess of funded premiums over estimated claims incurred but not reported | 347,287 |  |  | 347,287 |  | 208,651 |
Restricted Cash |  |  |  |  |  |  |
Dividends paid |  |  | $ 8,607,192 |  |  |  |
Cash and cash equivalents | 14,541,901 |  |  | 14,541,901 |  | 8,265,606 |
Total cash and cash equivalents and restricted cash | 14,541,901 | 7,482,863 |  | 14,541,901 | 7,482,863 | $ 8,265,606 | $ 23,784,867
Customer Service |  |  |  |  |  |  |
Customer Service Revenue |  |  |  |  |  |  |
Customer Service Sales | 1,338,893 | 980,845 |  | 3,784,493 | 3,010,720 |  |
Customer Service Cost of Sales | 369,562 | 408,161 |  | 1,112,298 | 1,079,462 |  |
Gross profit | $ 961,331 | $ 572,684 |  | $ 2,672,195 | $ 1,931,258 |  |
Property Plant and Equipment Other than Air Transportation Equipment and Manufacturing Facility | Minimum |  |  |  |  |  |  |
Number of business segments |  |  |  |  |  |  |
Estimated useful lives |  |  |  | 3 years |  |  |
Property Plant and Equipment Other than Air Transportation Equipment and Manufacturing Facility | Maximum |  |  |  |  |  |  |
Number of business segments |  |  |  |  |  |  |
Estimated useful lives |  |  |  | 7 years |  |  |
Manufacturing facility |  |  |  |  |  |  |
Number of business segments |  |  |  |  |  |  |
Estimated useful lives |  |  |  | 39 years |  |  |
Corporate airplanes |  |  |  |  |  |  |
Number of business segments |  |  |  |  |  |  |
Estimated useful lives |  |  |  | 10 years |  |  |

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