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Income Taxes
6 Months Ended
Jun. 30, 2013
Income Tax Disclosure [Abstract]  
Income Tax Disclosure [Text Block]
5.
Income Taxes
 
At December 31, 2012, the Company had a $3.0 million unrecognized tax benefit. The Company recorded a full valuation allowance on the net deferred tax asset recognized in the consolidated financial statements as of December 31, 2012.
During the six months ended June 30, 2013 there were no material changes to the measurement of unrecognized tax benefits in various taxing jurisdictions. The Company recognizes interest and penalties related to uncertain tax positions as a component of income tax expense.
 
The tax returns for all years in the Company’s major tax jurisdictions are not settled as of January 1, 2013; no changes in settled tax years have occurred through June 30, 2013. Due to the existence of tax attribute carryforwards (which are currently offset by a full valuation allowance), the Company treats all years’ tax positions as unsettled due to the taxing authorities’ ability to modify these attributes.