Note 8 - Loans Payable - Related Parties (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Interest Expense, Related Party	$ 105,292	$ 83,285	$ 209,578	$ 163,424
Stock Issued During Period, Value, New Issues			$ 59,768
Related Parties Lenders [Member]
Stock Issued During Period, Shares, New Issues	27,000	0	54,000	0
Stock Issued During Period, Value, New Issues	$ 16,740		$ 33,480
Loans Payable to Related Party [Member]
Interest Payable, Related Party	303,541		303,541		$ 248,100
Interest Expense, Related Party	$ 43,367	$ 20,992	$ 86,409	$ 41,677