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Income Taxes - Composition of Loss from Continuing Operations before Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]    
Domestic $ (142) $ (5,409)
Foreign 60 (88)
Loss from continuing operations before income taxes $ (82) $ (5,497)