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Income Taxes (Details) - USD ($)			3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 01, 2018	Dec. 31, 2017	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2018
Income Taxes
U.S. Federal statutory tax rate (as a percent)	21.00%	35.00%					24.50%
Net operating loss previous carryback period elimination					2 years
Income tax expense (benefit)			$ 7,794	$ 200,705	$ 7,794	$ 61,819
Effective tax rate benefit (as a percent)			3.70%	(18.00%)	2.20%	(2.90%)
Change in valuation allowance			$ 84,000	$ 2,300,000	$ 246,000	$ 2,300,000

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Represents the previous carryback period eliminated, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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