Income Taxes Components of Deferred tax asset/ liability (Tables)

12 Months Ended

Dec. 31, 2012

Components of deferred tax asset/ liability [Abstract]

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

The components of the net deferred income tax asset are as follows (in thousands):

	Year ended 31 December
	2012			2011
Net operating loss carry forwards	$	55,669		$	53,477
Tax credit carry forwards	24,826			19,902
Fixed and intangible assets	7,486			7,501
Capitalized research and development costs	58			37
Reserves and other cumulative temporary differences	20,910			22,878
Gross deferred income tax assets	108,949			103,795
Valuation allowance	(108,949		)	(103,795		)
Net deferred income tax assets	$	—		$	—