XML 39 R30.htm IDEA: XBRL DOCUMENT v3.10.0.1
Note 9 - Concentrations - Customers Representing 5% or More of Total Revenue (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Revenue by Customer $ 257,696 $ 197,323 $ 998,423 $ 793,099
Major Customers 1 [Member]        
Revenue by Customer     254,018 179,292
Major Customers 2 [Member]        
Revenue by Customer     117,589 100,322
Major Customers 3 [Member]        
Revenue by Customer     93,563 88,284
Major Customers 4 [Member]        
Revenue by Customer     72,557 56,008
Major Customers 5 [Member]        
Revenue by Customer     44,316 45,443
Major Customers 6 [Member]        
Revenue by Customer     $ 40,655