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Income Taxes (Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Income taxed at statutory rates	$ (1,226)	$ 392	$ (7,314)
Stock-based compensation	(382)	32	41
Other adjustments	15	27	5
Adjustments due to capital transactions		(119)
R&D grant	5,936	5,366
Prior year provision to actual adjustments	(4,269)	(2,894)	(4,511)
Differences in tax rates	524	(368)	541
Effect of foreign exchange	379	350	276
Expiration of NOLs		231	189
Change in valuation allowance	$ (977)	$ (3,017)	$ 10,773

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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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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 income tax rates.

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