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Supplemental Balance Sheet Disclosures - Property and Equipment (Details)	3 Months Ended		6 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($) aircraft	Mar. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)
Property and equipment
Property and equipment, gross	$ 21,336,119		$ 21,336,119		$ 21,309,662
Less: accumulated depreciation and amortization	(13,053,261)		(13,053,261)		(12,864,970)
Property and equipment, net	8,282,858		8,282,858		8,444,692
Depreciation and amortization for property and equipment	97,610	$ 111,000	194,254	$ 218,000
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		44,400		49,200
Operating lease right-of-use asset	87,536		87,536
Other non-current assets	98,742		98,742		104,841
Total other assets	230,678		230,678		154,041
Accumulated amortization of intangible assets	555,837		555,837		551,037
Impairment charges			0	0
Intangible asset amortization expense	0	5,000	4,800	12,000
Prepaid software licenses	23,442		23,442		29,541
Computer equipment
Property and equipment
Property and equipment, gross	2,299,372		2,299,372		2,285,152
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	1,033,779		$ 1,033,779		1,033,779
Manufacturing facility
Property and equipment
Property and equipment, gross	5,733,313		5,733,313		5,733,313
Equipment
Property and equipment
Property and equipment, gross	5,647,371		5,647,371		5,635,134
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	$ 3,409	$ 2,000	$ 6,100	$ 4,000

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