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v3.21.2

Supplemental Balance Sheet Disclosures - Property and Equipment & Other Assets (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) aircraft | Jun. 30, 2020 USD ($) | Sep. 30, 2020 USD ($)
Property and equipment |  |  |  |  |
Property and equipment, gross | $ 21,344,884 |  | $ 21,344,884 |  | $ 21,413,029
Less: accumulated depreciation and amortization | (13,123,942) |  | (13,123,942) |  | (13,237,157)
Property and equipment, net | 8,220,942 |  | 8,220,942 |  | 8,175,872
Depreciation and amortization for property and equipment | 90,061 | $ 92,330 | 278,956 | $ 286,584 |
Other assets |  |  |  |  |
Intangible assets, net of accumulated amortization of $632,969 and $583,655 at June 30, 2021 and September 30, 2020, respectively | 63,537 |  | 63,537 |  | 112,851
Operating lease right-of-use asset | 2,241 |  | 2,241 |  | 45,126
Other non-current assets | 85,586 |  | 85,586 |  | 91,566
Total other assets | 151,364 |  | 151,364 |  | 249,543
Accumulated amortization of intangible assets | 632,969 |  | 632,969 |  | 583,655
Impairment charges |  |  | 0 | 0 |
Intangible asset amortization expense | 16,841 | 0 | 49,314 | 4,800 |
Prepaid software licenses | 10,286 |  | 10,286 |  | 16,266
Computer equipment |  |  |  |  |
Property and equipment |  |  |  |  |
Property and equipment, gross | 2,310,994 |  | 2,310,994 |  | 2,302,978
Corporate airplanes |  |  |  |  |
Property and equipment |  |  |  |  |
Property and equipment, gross | 5,601,039 |  | $ 5,601,039 |  | 5,601,039
Number of airplanes depreciated | aircraft |  |  | 2 |  |
Pilatus PC-12 |  |  |  |  |
Property and equipment |  |  |  |  |
Number of airplanes depreciated | aircraft |  |  | 1 |  |
Furniture and office equipment |  |  |  |  |
Property and equipment |  |  |  |  |
Property and equipment, gross | 970,725 |  | $ 970,725 |  | 1,031,099
Manufacturing facility |  |  |  |  |
Property and equipment |  |  |  |  |
Property and equipment, gross | 5,883,691 |  | 5,883,691 |  | 5,733,313
Equipment |  |  |  |  |
Property and equipment |  |  |  |  |
Property and equipment, gross | 5,557,190 |  | 5,557,190 |  | 5,723,355
Land |  |  |  |  |
Property and equipment |  |  |  |  |
Property and equipment, gross | 1,021,245 |  | 1,021,245 |  | $ 1,021,245
Prepaid software licenses |  |  |  |  |
Other assets |  |  |  |  |
Intangible asset amortization expense | $ 2,870 | $ 4,067 | $ 5,980 | $ 10,166 |

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