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Income Taxes (Details 1) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Current |  |  |
Federal |  |  |
State | 2 | 2 | 2
Foreign | (58) | 365 | 91
Change in deferred |  |  |
Federal | 6,780 | (1,604) | (2,466)
Federal valuation allowance | (6,780) | 1,604 | 2,466
State | 104 | (197) | (252)
State valuation allowance | (104) | 197 | 252
Foreign | (453) | (161) | 6
Foreign valuation allowance | 453 | 161 | (6)
Total current | $ 56 | $ 367 | $ 93

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