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Supplemental Balance Sheet Disclosures - Property and Equipment & Other Assets (Details)	3 Months Ended
	Dec. 31, 2021 USD ($) aircraft	Dec. 31, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Property and equipment
Property and equipment, gross	$ 21,399,764		$ 21,337,082
Less: accumulated depreciation and amortization	(13,268,315)		(13,193,599)
Property and equipment, net	8,131,449		8,143,483
Depreciation and amortization for property and equipment	92,372	$ 93,051
Other assets
Intangible assets, net of accumulated amortization of $634,032 at September 30, 2021 and $583,655 at September 30, 2020	62,474		62,474
Operating lease right-of-use asset	39,336		42,976
Other non-current assets	79,845		82,834
Total other assets	181,655		188,284
Accumulated amortization of intangible assets	634,032		634,032
Impairment charges	0	0
Intangible asset amortization expense	0	19,914
Prepaid software licenses	4,545			$ 7,535
Computer equipment
Property and equipment
Property and equipment, gross	2,294,387		2,309,053
Corporate airplanes
Property and equipment
Property and equipment, gross	$ 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	$ 970,725		970,725
Manufacturing facility
Property and equipment
Property and equipment, gross	5,889,491		5,889,491
Equipment
Property and equipment
Property and equipment, gross	5,622,877		5,545,529
Land
Property and equipment
Property and equipment, gross	1,021,245		$ 1,021,245
Prepaid software licenses
Other assets
Intangible asset amortization expense	$ 2,990	$ 717

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