Note 14 - Income Taxes (Details Textual)	12 Months Ended
	Dec. 31, 2018 USD ($)
Operating Loss Carryforwards, Total	$ 30,636,792
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ (495,005)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ 1,699,440
Revaluation of Deferred Tax Assets (Liabilities) Due to Change in Tax Rate [Member]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ (1,699,440)