Note 9 - Income Taxes (Details Textual) - USD ($)		12 Months Ended
	Dec. 22, 2017	Dec. 31, 2018	Dec. 31, 2017
Increase (Decrease) of Deferred Tax Assets as a Result of Tax Cuts and Jobs Act	$ (585,000)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%	21.00%
Unrecognized Tax Benefits, Ending Balance		$ 0	$ 0
Operating Loss Carryforwards, Total		23,500,000
Deferred Tax Assets, Valuation Allowance, Total		3,081,000	1,500,000
Income Tax Examination, Penalties and Interest Expense, Total		$ 0	$ 0