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Income Tax Components of income tax (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
Document Fiscal Year Focus 2013    
Income (loss) from continuing operations before income taxes      
United States $ (6,255) $ (36,808) $ (5,380)
Canada (867) (9,290) (976)
Income (loss) from continuing operations before income taxes (7,122) (46,098) (6,356)
Current income tax expense (benefit):      
U.S. Federal (864) (740) 384
U.S. state 84 215 295
Canada 639 1,016 (190)
Total (141) 491 489
Deferred income tax expense (benefit):      
U.S. Federal 0 16,159 (2,187)
U.S. state 0 1,160 (155)
Canada 0 125 86
Total 0 17,444 (2,256)
Total income tax expense (benefit):      
U.S. Federal (864) 15,419 (1,803)
U.S. state 84 1,375 140
Canada 639 1,141 (104)
Total $ (141) $ 17,935 $ (1,767)