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Note 10 - Segment Reporting - Summary of Property and Equipment by Geographic Region (Details) - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Property and equipment $ 20,405,942 $ 13,450,438
CANADA    
Property and equipment 1,048,911 1,010,427
UNITED STATES    
Property and equipment 19,326,557 12,398,961
GERMANY    
Property and equipment $ 30,474 $ 41,050