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Income Taxes - Source of Income (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income (loss) before income taxes, total $ (8,714) $ (12,035)
U.S.    
Income (loss) before income taxes, domestic (646) (2,477)
Canada    
Income (loss) before income taxes, foreign (2,288) (2,119)
Other Foreign    
Income (loss) before income taxes, foreign $ (5,780) $ (7,439)