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Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]                    
Rate differential impact - Tax Cuts and Jobs Act                 $ 34,679 $ 0
Loss from Continuing Operations before Income Taxes, Domestic                 (5,106) (4,632)
Income (loss) from Continuing Operations before Income Taxes, Foreign                 455 711
Loss from operations before provision for income taxes $ (1,255) $ (850) $ (1,341) $ (1,205) $ (1,135) $ (1,205) $ (712) $ (869) $ (4,651) $ (3,921)