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Supplemental Balance Sheet Disclosures - Property and Equipment (Details)	3 Months Ended
	Dec. 31, 2019 USD ($) aircraft	Dec. 31, 2018 USD ($)	Sep. 30, 2019 USD ($)
Property and equipment
Property and equipment, gross	$ 21,321,127		$ 21,309,662
Less: accumulated depreciation and amortization	(12,955,650)		(12,864,970)
Property and equipment, net	8,365,477		8,444,692
Depreciation and amortization for property and equipment	96,644	$ 107,300
Other assets
Intangible assets, net of accumulated amortization of $555,837 and $551,037 at December 31, 2019 and September 30, 2019, respectively	44,400		49,200
Operating lease right-of-use asset	108,675
Other non-current assets	102,151		104,841
Total other assets	255,226		154,041
Accumulated amortization of intangible assets	555,837		551,037
Impairment charges	0	0
Intangible asset amortization expense	4,800	7,200
Prepaid software licenses	26,850		29,541
Computer equipment
Property and equipment
Property and equipment, gross	2,296,617		2,285,152
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	$ 1,033,779		1,033,779
Manufacturing facility
Property and equipment
Property and equipment, gross	5,733,313		5,733,313
Equipment
Property and equipment
Property and equipment, gross	5,635,134		5,635,134
Land
Property and equipment
Property and equipment, gross	1,021,245		$ 1,021,245
Prepaid software licenses
Other assets
Intangible asset amortization expense	$ 2,691	$ 1,615

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