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Note 3 - Company Operations (Details Textual)
3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Number of Operating Segments     3  
Revenues $ 397,005 $ 139,648 $ 595,776 $ 427,956
Intersegment Eliminations [Member]        
Revenues     $ 0