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Note 9 - Income Taxes - Provision for Federal and State Income Tax (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Current provision:    
Federal $ 32,369
State 32,668 42,916
Current tax provision 32,668 75,285
Deferred provision:    
Federal (benefit)
(Benefit) expense for income taxes $ 32,668 $ 75,285