Note 7 - Loans Payable (Details Textual) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018
Debt Instrument, Debt Default, Amount	$ 9,675,000		$ 9,675,000
Equipment Pledged as Collateral	$ 11,000		11,000
Stock Issued During Period, Value, New Issues			$ 59,768
Individual Lenders [Member]
Stock Issued During Period, Shares, New Issues	26,000	0	42,400
Stock Issued During Period, Value, New Issues	$ 16,120		$ 26,288

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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