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Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of the (benefit) provision for income taxes
Loss from continuing operations before taxes	$ (13,774)	$ (16,486)
Income tax expense computed at statutory federal tax rate	(4,683)	(5,605)
Disallowed expenses and non-taxable income	12	27
Loss surrendered to generate R&D credit	1,945	2,479
Additional research and development tax relief	(2,827)	(3,402)
Change in valuation allowance	2,029	(4,189)
Foreign items, including change in tax rates, and other	1,238	6,882
Other foreign items	303	1,664
Current - total	$ (1,983)	$ (2,144)

X

- Definition

The sum of the differences between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to nondeductible expenses under enacted tax laws, differences in the methodologies used to determine expense amounts for financial statements prepared in accordance with generally accepted accounting principles and income that is exempt from income taxes under enacted tax laws.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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