Note 10 - Income Taxes (Details Textual) - USD ($)	1 Months Ended	3 Months Ended	11 Months Ended
	Dec. 31, 2017	Feb. 28, 2018	Nov. 30, 2018
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability		$ 300,000
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%