Note 3 - Company Operations - Customers Representing 5% or More of Total Revenue (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
|
Revenue by Customer | $ 397,005 | $ 139,648 | $ 595,776 | $ 427,956 |
Major Customers 1 [Member] | ||||
Revenue by Customer | 179,292 | 112,835 | ||
Major Customers 2 [Member] | ||||
Revenue by Customer | 80,210 | 97,135 | ||
Major Customers 3 [Member] | ||||
Revenue by Customer | 54,154 | 63,449 | ||
Major Customers 4 [Member] | ||||
Revenue by Customer | 42,513 | 52,063 | ||
Major Customers 5 [Member] | ||||
Revenue by Customer | 38,333 | 51,020 | ||
Major Customers 6 [Member] | ||||
Revenue by Customer | $ 47,666 |