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Summary of Significant Accounting Policies (Details)			3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 01, 2018	Dec. 31, 2017	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2019 USD ($) segment	Mar. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)
Number of business segments
Number of business segments in which the entity operates | segment					1
Long-Lived Assets
Impairment charges					$ 0	$ 0
Income Taxes
U.S. Federal statutory tax rate (as a percent)	21.00%	35.00%					24.50%
Net operating losses (as a percent)					80.00%
Engineering Development
Percentage of employees who were engineers engaged in various engineering development projects					21.00%
Warranty
Length of warranty period					24 months
Contract Balances
Balance at beginning of the period					$ 356,801
Balance at end of the period			$ 525,899		525,899		$ 356,801
Increase in contract liabilities					169,098
Amount of billings paid in advance					1,045,692
Revenue recognized included in the opening contract liabilities balance					876,594
Customer Service Revenue
Customer Service Sales			4,203,127	$ 3,727,204	8,180,777	6,815,188
Customer Service Cost of Sales			1,856,921	2,082,347	3,668,768	3,675,616
Gross profit			2,346,206	1,644,857	4,512,009	3,139,572
Customer Service
Customer Service Revenue
Customer Service Sales			813,955	1,185,460	1,476,048	2,224,307
Customer Service Cost of Sales			303,813	488,221	628,965	1,001,578
Gross profit			$ 510,142	$ 697,239	$ 847,083	$ 1,222,729
Property and equipment except manufacturing facility and the corporate airplane | Minimum
Number of business segments
Estimated useful lives					3 years
Property and equipment except manufacturing facility and the corporate airplane | Maximum
Number of business segments
Estimated useful lives					7 years
Manufacturing facility
Number of business segments
Estimated useful lives					39 years
Corporate airplanes
Number of business segments
Estimated useful lives					10 years

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