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

12 Months Ended

Dec. 31, 2014

Components of deferred tax asset/ liability [Abstract]

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

As of December 31, 2014 and 2013, a valuation allowance has been recorded against 100% of the gross deferred tax assets as a result of uncertainties regarding the realization of the asset balance. As of December 31, 2014 and 2013, the Company had no significant deferred tax liabilities. The components of the net deferred income tax asset are as follows (in thousands):

	Year ended December 31,
	2014			2013
Net operating loss carry forwards	$	72,058		$	60,961
Tax credit carry forwards	26,571			26,869
Fixed and intangible assets	6,424			7,246
Capitalized research and development costs	58			58
Reserves and other cumulative temporary differences	15,535			19,380
Gross deferred income tax assets	120,646			114,514
Valuation allowance	(120,646		)	(114,514		)
Net deferred income tax assets	$	—		$	—