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Note 12 - Income Taxes (Details Textual) - USD ($)	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Expense (Benefit), Total	$ 283,003	$ 2,708,888
Effective Income Tax Rate Reconciliation, Percent, Total	21.10%	22.90%
Income Tax Expense (Benefit), Excluding Adjustment of Deferred Tax (Asset) Liability		$ 234,888
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability		$ 2,474,000
Unrecognized Tax Benefits, Ending Balance	$ 0

X

- Definition

Represents the amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations, excluding any amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity.

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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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