Income Taxes	6 Months Ended
Jun. 30, 2014
Income Taxes [Abstract]
Income Taxes	10. Income Taxes Income Tax Expense The Company’s effective income tax rate was approximately 10% and 22% for the three and six months ended June 30, 2014, respectively, as compared to 35% and 31% for the three and six months ended June 30, 2013, respectively. The Company’s income tax rate for the three and six months ended June 30, 2014 was favorably affected by the reduction of uncertain tax positions and, to a lesser extent, was unfavorably affected by the 2014 research and development tax credit, which has not yet been enacted for the 2014 tax year. The Company’s income tax rate in 2013 was favorably affected by the full year 2012 research and development tax credit, which was enacted in January 2013 and, therefore, reduced the Company’s tax expense during the first quarter of 2013. In June 2014 the Internal Revenue Service completed a limited scope examination of certain of the Company’s federal income tax returns. At the resolution of this examination, the Company reevaluated its liabilities for uncertain tax positions, primarily related to its research and development tax credits and credit carryforwards, and, based on revised estimates and the settlement of the examination, reversed $748,000 in uncertain tax liabilities and tax expense. Deferred Income Taxes Deferred income taxes reflect the net tax effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and tax return purposes. The Company generates deferred tax assets primarily as a result of book write-downs, reserves, or impairments which are not immediately deductible for tax return purposes. The Company acquired significant deferred tax assets, primarily net operating loss carryforwards, from its acquisitions of Hemosphere and Cardiogenesis Corporation in the second quarters of 2012 and 2011, respectively. The Company currently estimates that a portion of its state net operating loss carryforwards will not be recoverable and has, therefore, recorded a valuation allowance against these state net operating loss carryforwards. As of June 30, 2014 the Company had a total of $1.5 million in valuation allowances against deferred tax assets, related to state net operating loss carryforwards, and a net deferred tax asset of $22.0 million. As of December 31, 2013 the Company had a total of $1.5 million in valuation allowances against deferred tax assets and a net deferred tax asset of $22.0 million.

10. Income Taxes

Income Tax Expense

The Company’s effective income tax rate was approximately 10% and 22% for the three and six months ended June 30, 2014, respectively, as compared to 35% and 31% for the three and six months ended June 30, 2013, respectively.

The Company’s income tax rate for the three and six months ended June 30, 2014 was favorably affected by the reduction of uncertain tax positions and, to a lesser extent, was unfavorably affected by the 2014 research and development tax credit, which has not yet been enacted for the 2014 tax year. The Company’s income tax rate in 2013 was favorably affected by the full year 2012 research and development tax credit, which was enacted in January 2013 and, therefore, reduced the Company’s tax expense during the first quarter of 2013.

In June 2014 the Internal Revenue Service completed a limited scope examination of certain of the Company’s federal income tax returns. At the resolution of this examination, the Company reevaluated its liabilities for uncertain tax positions, primarily related to its research and development tax credits and credit carryforwards, and, based on revised estimates and the settlement of the examination, reversed $748,000 in uncertain tax liabilities and tax expense.

Deferred Income Taxes

Deferred income taxes reflect the net tax effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and tax return purposes. The Company generates deferred tax assets primarily as a result of book write-downs, reserves, or impairments which are not immediately deductible for tax return purposes. The Company acquired significant deferred tax assets, primarily net operating loss carryforwards, from its acquisitions of Hemosphere and Cardiogenesis Corporation in the second quarters of 2012 and 2011, respectively. The Company currently estimates that a portion of its state net operating loss carryforwards will not be recoverable and has, therefore, recorded a valuation allowance against these state net operating loss carryforwards.

As of June 30, 2014 the Company had a total of $1.5 million in valuation allowances against deferred tax assets, related to state net operating loss carryforwards, and a net deferred tax asset of $22.0 million. As of December 31, 2013 the Company had a total of $1.5 million in valuation allowances against deferred tax assets and a net deferred tax asset of $22.0 million.