Income taxes (restated) (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Significant components of deferred tax assets were as follows as of December 31:

	Year ended December 31,
	2012			2011
U.S. federal tax loss carry-forward	$	6,400		$	5,858
U.S. State tax loss carry-forward		224			74
Foreign tax loss carry-forward		15,552			15,968
U.S. federal capital loss carry-forward		706			671
Equity-based compensation, fixed assets and other		255			104
Total deferred tax assets		23,137			22,675
Less: valuation allowance		(22,917	)		(22,675	)
Subtotal		220			–
Deferred Tax Liability
Warrants		(220	)
Net deferred tax asset	$	–		$	–

Summary of Operating Loss Carryforwards [Table Text Block]

As of December 31, 2012, the Company had the following tax attributes:

	Amount		Begins to expire
U.S. federal net operating loss carry-forwards	$	19,049		Fiscal 2023
U.S. State net operating loss carry-forwards		2,694		Fiscal 2031
U.K. net operating loss carry-forwards		67,617		Indefinite
U.S. federal capital loss carry-forwards		2,076		Fiscal 2015

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The provision for/(benefit from) income tax differs from the amount computed by applying the statutory federal income tax rate to income before the provision for/(benefit from) income taxes. The sources and tax effects of the differences are as follows for the year ended December 31:

	2012			2011
Income taxes at the federal statutory rates		35	%		35	%
Foreign rate differential		42			45
Change in valuation allowance		(7	)		(12	)
Effective rate of income tax		0	%		(2	)%