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Supplemental Balance Sheet Disclosures - Property and Equipment & Other Assets (Details)	3 Months Ended		6 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) aircraft	Mar. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)
Property and equipment
Property and equipment, gross	$ 21,406,774		$ 21,406,774		$ 21,337,082
Less: accumulated depreciation and amortization	(13,359,428)		(13,359,428)		(13,193,599)
Property and equipment, net	8,047,346		8,047,346		8,143,483
Depreciation and amortization for property and equipment	88,122	$ 95,844	180,494	$ 188,895
Other assets
Intangible assets, net of accumulated amortization of $634,032 at September 30, 2021 and $583,655 at September 30, 2020	61,411		61,411		62,474
Operating lease right-of-use asset	35,741		35,741		42,976
Other non-current assets	76,257		76,257		82,834
Total other assets	173,409		173,409		188,284
Accumulated amortization of intangible assets	635,095		635,095		634,032
Impairment charges			0	0
Intangible asset amortization expense	1,063	12,559	1,063	32,473
Prepaid software licenses	958		958		7,535
Computer equipment
Property and equipment
Property and equipment, gross	2,294,387		2,294,387		2,309,053
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 Aircraft Limited
Property and equipment
Number of airplanes depreciated | aircraft			1
Furniture and office equipment
Property and equipment
Property and equipment, gross	977,735		$ 977,735		970,725
Manufacturing facility
Property and equipment
Property and equipment, gross	5,889,491		5,889,491		5,889,491
Equipment
Property and equipment
Property and equipment, gross	5,622,877		5,622,877		5,545,529
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	$ 3,557	$ 2,392	$ 6,577	$ 3,110

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