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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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