Note 7 - Notes Payable - Notes Payable (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Notes Payable, Gross	$ 5,146,226	$ 2,667,727
Debt Instrument, Unamortized Discount, Total	350,426	1,032,813
Notes Payable	4,795,800	1,634,914
Convertible Promissory Note [Member]
Notes Payable, Gross	1,989,104	2,297,727
Promissory Note [Member]
Notes Payable, Gross	680,833
Borrowings Against Equity Line, One [Member]
Notes Payable, Gross	18,563
Borrowings Against Equity Line, Two [Member]
Notes Payable, Gross	147,783
Borrowings Against Equity Line, Three [Member]
Notes Payable, Gross	194,943
Dr. Schwartz Note, Two [Member]
Notes Payable, Gross	$ 2,115,000	$ 370,000