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Note 9 - Loss Per Share - Summary of Basic and Diluted Loss Per Common Share (Details) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Net loss attributable to common shareholders $ (2,627,562) $ (3,262,027)
Weighted average common shares – Outstanding (in shares) 10,999,554 8,104,860
Basic and diluted loss per share (in dollars per share) $ (0.24) $ (0.40)