Income Taxes	6 Months Ended
Jun. 30, 2018
Income Taxes
Income Taxes	11. Income Taxes During the three and six months ended June 30, 2018, the Company recorded total income tax expense of $0.1 million and $0.2 million, respectively. The Company provides testing to clinics and licenses the cloud-based software to its licensees that are based in a foreign country, which contributed to a foreign income tax expense of $65,000 and $125,000 for the three and six months ended June 30, 2018, respectively. State tax expense of $48,000 and $92,000 based on income was also recorded for the three and six months ended June 30, 2018, respectively. During the three and six months ended June 30, 2017, the Company recorded a foreign income tax expense of $64,000 and $0.1 million, respectively, and no state income tax expense was recorded. Due to the Company’s history of cumulative operating losses, the Company concluded that, after considering all the available objective evidence, it is not more likely than not that all of the Company’s net deferred tax assets will be realized. Accordingly, all of the Company’s deferred tax assets, which includes net operating loss or NOL carryforwards and tax credits related primarily to research and development, continue to be subjected to a valuation allowance as of March 31, 2018. The Company will continue to maintain a full valuation allowance until there is sufficient evidence to support recoverability of its deferred tax assets. In December 2017, the U.S. Congress passed the Tax Cuts and Jobs Act of 2017. As a result, corporate tax rate was reduced to 21%, effective January 1, 2018. ASC 740, Income Taxes, requires entities to recognize the effect of the tax law changes in the period of enactment. Shortly after the enactment of the Act, the Securities and Exchange Commission (“SEC”) staff issued Staff Accounting Bulletin No. 118 (“SAB 118”) to address the application of U.S. GAAP in situations when an entity does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Act. The Company has made adjustments to reduce its deferred tax assets and liabilities by $42.1 million and $0.2 million, respectively, based on the reduction of the U.S. federal corporate tax rate from 34% to 21% and assessed the realizability of its deferred tax assets based on its current understanding of the provisions of the new law. A corresponding net reduction to valuation allowance of $42.2 million has been made for the year ended December 31, 2017. The Company considers its accounting for the impacts of the new law to be provisional and the Company will continue to assess the impact of the recently enacted tax law (and expected further guidance from federal and state tax authorities as well as further guidance for the associated income tax accounting) on its business and consolidated financial statements over the next 12 months. The Company had $6.7 million and $5.9 million in unrecognized tax benefits at June 30, 2018 and December 31, 2017, respectively. The reversal of the uncertain tax benefits would not affect the effective tax rate to the extent that the Company continues to maintain a full valuation allowance against its deferred tax assets. Unrecognized tax benefits may change during the next twelve months for items that arise in the ordinary course of business. Interest and/or penalties related to income tax matters are recognized as a component of income tax expense. As of June 30, 2018, there were no accrued interest and penalties related to uncertain tax positions.

11. Income Taxes

During the three and six months ended June 30, 2018, the Company recorded total income tax expense of $0.1 million and $0.2 million, respectively. The Company provides testing to clinics and licenses the cloud-based software to its licensees that are based in a foreign country, which contributed to a foreign income tax expense of $65,000 and $125,000 for the three and six months ended June 30, 2018, respectively. State tax expense of $48,000 and $92,000 based on income was also recorded for the three and six months ended June 30, 2018, respectively. During the three and six months ended June 30, 2017, the Company recorded a foreign income tax expense of $64,000 and $0.1 million, respectively, and no state income tax expense was recorded.

Due to the Company’s history of cumulative operating losses, the Company concluded that, after considering all the available objective evidence, it is not more likely than not that all of the Company’s net deferred tax assets will be realized. Accordingly, all of the Company’s deferred tax assets, which includes net operating loss or NOL carryforwards and tax credits related primarily to research and development, continue to be subjected to a valuation allowance as of March 31, 2018. The Company will continue to maintain a full valuation allowance until there is sufficient evidence to support recoverability of its deferred tax assets.

In December 2017, the U.S. Congress passed the Tax Cuts and Jobs Act of 2017. As a result, corporate tax rate was reduced to 21%, effective January 1, 2018. ASC 740, Income Taxes, requires entities to recognize the effect of the tax law changes in the period of enactment. Shortly after the enactment of the Act, the Securities and Exchange Commission (“SEC”) staff issued Staff Accounting Bulletin No. 118 (“SAB 118”) to address the application of U.S. GAAP in situations when an entity does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Act. The Company has made adjustments to reduce its deferred tax assets and liabilities by $42.1 million and $0.2 million, respectively, based on the reduction of the U.S. federal corporate tax rate from 34% to 21% and assessed the realizability of its deferred tax assets based on its current understanding of the provisions of the new law. A corresponding net reduction to valuation allowance of $42.2 million has been made for the year ended December 31, 2017. The Company considers its accounting for the impacts of the new law to be provisional and the Company will continue to assess the impact of the recently enacted tax law (and expected further guidance from federal and state tax authorities as well as further guidance for the associated income tax accounting) on its business and consolidated financial statements over the next 12 months.

The Company had $6.7 million and $5.9 million in unrecognized tax benefits at June 30, 2018 and December 31, 2017, respectively. The reversal of the uncertain tax benefits would not affect the effective tax rate to the extent that the Company continues to maintain a full valuation allowance against its deferred tax assets. Unrecognized tax benefits may change during the next twelve months for items that arise in the ordinary course of business.

Interest and/or penalties related to income tax matters are recognized as a component of income tax expense. As of June 30, 2018, there were no accrued interest and penalties related to uncertain tax positions.