Supplemental Balance Sheet Disclosures - Property and Equipment (Details)	3 Months Ended
Dec. 31, 2020 USD ($) aircraft	Dec. 31, 2019 USD ($)	Sep. 30, 2020 USD ($)
Property and equipment
Property and equipment, gross	$ 21,460,612		$ 21,413,029
Less: accumulated depreciation and amortization	(13,304,945)		(13,237,157)
Property and equipment, net	8,155,667		8,175,872
Depreciation and amortization for property and equipment	93,051	$ 96,644
Other assets
Intangible assets, net of accumulated amortization of $583,655 at September 30, 2020 and $551,037 at September 30, 2019	92,937		112,851
Operating lease right-of-use asset	24,307		45,126
Other non-current assets	90,849		91,566
Total other assets	208,093		249,543
Accumulated amortization of intangible assets	603,569		583,655
Impairment charges	0	0
Intangible asset amortization expense	19,914	4,800
Prepaid software licenses	15,548		16,266
Computer equipment
Property and equipment
Property and equipment, gross	2,308,218		2,302,978
Corporate airplanes
Property and equipment
Property and equipment, gross	$ 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	$ 1,019,891		1,031,099
Manufacturing facility
Property and equipment
Property and equipment, gross	5,733,313		5,733,313
Equipment
Property and equipment
Property and equipment, gross	5,776,906		5,723,355
Land
Property and equipment
Property and equipment, gross	1,021,245		$ 1,021,245
Prepaid software licenses
Other assets
Intangible asset amortization expense	$ 717	$ 2,691

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