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Income Taxes Components of income tax (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income (loss) from continuing operations before income taxes      
United States $ 3,583 $ (4,355) $ (6,255)
Canada (2,431) (1,479) (867)
Income (loss) from continuing operations before income taxes 1,152 (5,834) (7,122)
Current income tax expense (benefit):      
U.S. Federal (461) (377) (864)
U.S. state 75 79 84
Canada 1,241 525 639
Total $ 855 $ 227 $ (141)