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Taxes (Reconciliation of (Benefit) Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of the (benefit) provision for income taxes
Loss from continuing operations before taxes	$ (9,681)	$ (9,126)
Income tax expense computed at statutory federal tax rate	(2,033)	(1,916)
Disallowed expenses and non-taxable income	352	345
Loss surrendered to generate R&D credit	1,788	1,686
Additional research and development tax relief	(1,238)	(1,299)
Change in valuation allowance	3,205	665
Foreign items, including change in tax rates, and other	1,638	176
Change in UK Tax Rate	(3,937)
Other foreign items	(1,011)	(953)
Current - total	$ (1,236)	$ (1,296)

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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 foreign income tax expense and repatriation of foreign earnings.

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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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