Income Taxes	6 Months Ended
Jun. 30, 2013
Income Taxes	10. Income Taxes The Company accounts for income taxes using the asset and liability method as codified in ASC 740. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. A valuation allowance is recorded to reduce deferred tax assets to the amount that is more likely than not to be realized. A full valuation allowance has been recorded against net deferred tax assets of $23.9 million at June 30, 2013 and December 31, 2012, respectively. The Company recorded a net provision of $0.085 million for income taxes for the three and six month period ended June 30, 2013, which represented minimum corporate income tax liabilities due for the Company’s taxable income that cannot be offset by usage of prior years’ net operating loss and tax credit carryforwards. The Company recorded no net provision or benefit for income taxes in the three and six month periods ended June 30, 2012 when the Company incurred taxable losses due to the full valuation allowance for deferred tax assets recorded in all of the periods then ended. Payments of minimum amount due to state taxing authorities that are not related to the level of the Company’s taxable income or loss are recorded as operating expenses instead of income tax expense. Our policy is to recognize interest and penalties accrued on any unrecognized tax benefits as a component of income tax expense. We did not have any material changes in unrecognized tax benefits and there were no interest expense or penalties on any unrecognized tax benefits during the three months ended June 30, 2013 and 2012. In general, a corporation’s ability to utilize its net operating loss (“NOL”) and research and development (“R&D”) credit carryforwards may be substantially limited due to ownership changes that may have occurred or that could occur in the future, as required by Section 382 of the Internal Revenue Code of 1986, as amended (the “Code”), as well as similar state provisions. These ownership changes may limit the amount of NOL and R&D credit carryforwards that can be utilized annually to offset future taxable income and tax, respectively. In general, an “ownership change,” as defined by Section 382 of the Code, results from a transaction or series of transactions over a three-year period resulting in an ownership change of more than 50 percent of the capital (as defined) of a company by certain stockholders or public groups. The amount of such limitations on the Company’s total federal net operating losses of approximately $53.0 million incurred since the Company’s inception in October 2006 through the fiscal year-ended December 31, 2012 has been analyzed, and the Company believes limitations exist only on the future annual deductibility of approximately $2.5 million of the Company’s total net operating loss carryforwards. Additionally, the Company had certain capital transactions during the six months ended June 30, 2013, that trigger a testing date and the Company has completed a preliminary study to assess whether one or more ownership changes have occurred since December 31, 2012. The Company believes it has not experienced an ownership change of more than 50 percent as a result of the capital transactions in the six months ended June 30, 2013. Therefore, utilization of certain NOL or tax credit carryforwards are believed not to be subject to additional annual limitations beyond the limitation discussed above. The annual limitations on a Company’s NOL or tax credit carryforwards is determined by first multiplying the value of the Company’s capital at the time of the ownership change by the applicable long-term, tax-exempt rate, and then could be subject to additional adjustments, as required. In the most adverse case, such limitation may result in the expiration of a portion of the NOL or tax credit carryforwards before utilization. Any carryforwards that expire prior to utilization as a result of such limitations will be removed from deferred tax assets with a corresponding reduction of the valuation allowance. Due to the Company’s full valuation allowance for deferred tax assets, it is not expected that any possible limitation on the future deductibility of NOL or tax credit carryforwards will have an impact on the results of operations of the Company. As of June 30, 2013, we continued to have a full valuation allowance against our net deferred tax assets. Although there was pre-tax income for the three and six months ended June 30, 2013, and we have expectations for business growth, uncertainty regarding profitability in the coming years, and the impact of that uncertainty on the future realization of the net operating loss carryforwards remain, therefore, we believe it is more likely than not that all of our deferred tax assets will not be realized.

10. Income Taxes

The Company accounts for income taxes using the asset and liability method as codified in ASC 740. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. A valuation allowance is recorded to reduce deferred tax assets to the amount that is more likely than not to be realized. A full valuation allowance has been recorded against net deferred tax assets of $23.9 million at June 30, 2013 and December 31, 2012, respectively.

The Company recorded a net provision of $0.085 million for income taxes for the three and six month period ended June 30, 2013, which represented minimum corporate income tax liabilities due for the Company’s taxable income that cannot be offset by usage of prior years’ net operating loss and tax credit carryforwards. The Company recorded no net provision or benefit for income taxes in the three and six month periods ended June 30, 2012 when the Company incurred taxable losses due to the full valuation allowance for deferred tax assets recorded in all of the periods then ended. Payments of minimum amount due to state taxing authorities that are not related to the level of the Company’s taxable income or loss are recorded as operating expenses instead of income tax expense.

Our policy is to recognize interest and penalties accrued on any unrecognized tax benefits as a component of income tax expense. We did not have any material changes in unrecognized tax benefits and there were no interest expense or penalties on any unrecognized tax benefits during the three months ended June 30, 2013 and 2012.

In general, a corporation’s ability to utilize its net operating loss (“NOL”) and research and development (“R&D”) credit carryforwards may be substantially limited due to ownership changes that may have occurred or that could occur in the future, as required by Section 382 of the Internal Revenue Code of 1986, as amended (the “Code”), as well as similar state provisions. These ownership changes may limit the amount of NOL and R&D credit carryforwards that can be utilized annually to offset future taxable income and tax, respectively. In general, an “ownership change,” as defined by Section 382 of the Code, results from a transaction or series of transactions over a three-year period resulting in an ownership change of more than 50 percent of the capital (as defined) of a company by certain stockholders or public groups.

The amount of such limitations on the Company’s total federal net operating losses of approximately $53.0 million incurred since the Company’s inception in October 2006 through the fiscal year-ended December 31, 2012 has been analyzed, and the Company believes limitations exist only on the future annual deductibility of approximately $2.5 million of the Company’s total net operating loss carryforwards. Additionally, the Company had certain capital transactions during the six months ended June 30, 2013, that trigger a testing date and the Company has completed a preliminary study to assess whether one or more ownership changes have occurred since December 31, 2012. The Company believes it has not experienced an ownership change of more than 50 percent as a result of the capital transactions in the six months ended June 30, 2013. Therefore, utilization of certain NOL or tax credit carryforwards are believed not to be subject to additional annual limitations beyond the limitation discussed above.

The annual limitations on a Company’s NOL or tax credit carryforwards is determined by first multiplying the value of the Company’s capital at the time of the ownership change by the applicable long-term, tax-exempt rate, and then could be subject to additional adjustments, as required. In the most adverse case, such limitation may result in the expiration of a portion of the NOL or tax credit carryforwards before utilization. Any carryforwards that expire prior to utilization as a result of such limitations will be removed from deferred tax assets with a corresponding reduction of the valuation allowance. Due to the Company’s full valuation allowance for deferred tax assets, it is not expected that any possible limitation on the future deductibility of NOL or tax credit carryforwards will have an impact on the results of operations of the Company. As of June 30, 2013, we continued to have a full valuation allowance against our net deferred tax assets. Although there was pre-tax income for the three and six months ended June 30, 2013, and we have expectations for business growth, uncertainty regarding profitability in the coming years, and the impact of that uncertainty on the future realization of the net operating loss carryforwards remain, therefore, we believe it is more likely than not that all of our deferred tax assets will not be realized.