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Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended			209 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013
Reconciliation of the (benefit) provision for income taxes
Loss from continuing operations before taxes	$ (11,180)	$ (15,107)	$ (15,168)
Income tax expense computed at statutory federal tax rate	(4,039)	(5,136)	(5,157)
Disallowed expenses and non-taxable income	62	176	(141)
Loss surrendered to generate R&D credit	4,833	3,025	1,372
Additional research and development tax relief	(4,418)	(2,656)	(2,260)
Change in valuation allowance	6,302	(579)	2,952
Research and development tax credit rate difference
Research and development true up	(4,530)
Foreign items, including change in tax rates, and other	120	3,819	2,669
Current - total	$ (1,670)	$ (1,351)	$ (565)	$ (21,465)

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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 current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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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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