Note 1 - Summary of Significant Accounting Policies (Details Textual)				3 Months Ended		9 Months Ended
	Oct. 28, 2019	Oct. 24, 2019 USD ($)	Oct. 04, 2019 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Retained Earnings (Accumulated Deficit), Ending Balance				$ (68,944,537)		$ (68,944,537)			$ (63,107,945)
Cash and Cash Equivalents, at Carrying Value, Ending Balance				98,599		98,599			162,152
Operating Lease, Right-of-Use Asset				886,712		886,712
Operating Lease, Liability, Current				500,732		500,732
Depreciation, Total				130,848	$ 26,120	284,150	$ 59,442
Amortization of Intangible Assets, Total				93,421	$ 38,387	199,481	$ 46,127
Income Tax Expense (Benefit), Total						0
Unrecognized Tax Benefits, Ending Balance				0		0
Liability for Uncertainty in Income Taxes, Current				0		$ 0
Open Tax Year						2015 2016 2017 2018
Number of Operating Segments						5
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset								$ 353,007
Operating Lease, Liability, Current								$ 79,252
Convertible Promissory Note [Member]
Proceeds from Debt, Net of Issuance Costs				25,000
Private Placement [Member]
Proceeds from Issuance or Sale of Equity, Total				$ 1,562,840
Subsequent Event [Member] | The 2019 Offering [Member]
Proceeds from Issuance or Sale of Equity, Net of Stock Issuance Costs			$ 2,811,309
Subsequent Event [Member] | Equity Line Purchase Agreement [Member] | Investor [Member]
Issuance or Sale of Equity, Can Be Raised		$ 15,000,000
Reverse Stock Split [Member] | Subsequent Event [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	10