Note 15 - Income Taxes (Details Textual) - USD ($)	1 Months Ended	9 Months Ended	12 Months Ended
Dec. 31, 2017	Aug. 31, 2018	Nov. 30, 2019	Dec. 31, 2018	Nov. 30, 2018
Operating Loss Carryforwards, Total			$ 5,033,000
Tax Credit Carryforward, Amount			$ 109,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%		21.00%	21.00%	21.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability		$ 298,000			$ 298,000

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

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-Name Accounting Standards Codification
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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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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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