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Note 13 - Segment Reporting - Summary of Property and Equipment by Geographic Region (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Property and equipment $ 55,486 $ 48,065 [1]
CANADA    
Property and equipment 2,009 1,393
UNITED STATES    
Property and equipment 53,422 46,631
GERMANY    
Property and equipment $ 55 $ 41
[1] The Company has initially applied ASC 2016-02 (Topic 842) using the modified retrospective method. Under this method, the comparative information is not restated.