Note 3 - Company Operations - Customers Representing 5% or More of Total Revenue (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Total revenues	$ 346,695	$ 198,771
Major Customers 1 [Member]
Total revenues	138,519	41,884
Major Customers 2 [Member]
Total revenues	39,899	34,137
Major Customers 3 [Member]
Total revenues	34,723	23,215
Major Customers 4 [Member]
Total revenues	24,193	13,039
Major Customers 5 [Member]
Total revenues	19,764	13,028
Major Customers 6 [Member]
Total revenues		$ 12,795