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Note 2 - Going Concern (Details Textual) - USD ($)
6 Months Ended
Jun. 30, 2018
Jan. 01, 2018
Dec. 31, 2017
Jun. 30, 2017
Dec. 31, 2016
Retained Earnings (Accumulated Deficit), Ending Balance $ (70,683,931) $ (66,836,475) $ (67,076,492)    
Cash and Cash Equivalents, at Carrying Value, Ending Balance 304,006   $ 288,721 $ 988,342 $ 1,061,307
Monthly Cash Requirement to Conduct Operations and Pay Dividend Obligations $ 592,000