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Note 10 - Segment Reporting - Summary of Property and Equipment by Geographic Region (Details) - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Property, plant and equipment $ 18,403,439 $ 13,450,438
CANADA    
Property, plant and equipment 1,095,863 1,010,427
UNITED STATES    
Property, plant and equipment 17,271,569 12,398,961
GERMANY    
Property, plant and equipment $ 36,007 $ 41,050