Income Taxes	6 Months Ended
Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	8. Income Taxes We compute income taxes using the asset and liability method in accordance with FASB ASC Topic 740, Income Taxes. Under the asset and liability method, we determine deferred income tax assets and liabilities based on the differences between the financial reporting and tax bases of assets and liabilities and measure them using currently enacted tax rates and laws. We provide a valuation allowance for the amount of deferred tax assets that, based on available evidence, are more likely than not to be realized. Realization of our net operating loss carryforward was not reasonably assured as of June 30, 2017 and December 31, 2016, and we have recorded a valuation allowance of $17,100,000 and $15,555,000, respectively, against deferred tax assets in excess of deferred tax liabilities in the accompanying condensed consolidated financial statements. As of June 30, 2017 and December 31, 2016, we had federal income tax net operating loss carryforwards of approximately $19,000,000 and $18,500,000, respectively, which expire at various dates beginning in 2031.

Income Taxes

6 Months Ended

Jun. 30, 2017

8. Income Taxes

We compute income taxes using the asset and liability method in accordance with FASB ASC Topic 740, Income Taxes. Under the asset and liability method, we determine deferred income tax assets and liabilities based on the differences between the financial reporting and tax bases of assets and liabilities and measure them using currently enacted tax rates and laws. We provide a valuation allowance for the amount of deferred tax assets that, based on available evidence, are more likely than not to be realized. Realization of our net operating loss carryforward was not reasonably assured as of June 30, 2017 and December 31, 2016, and we have recorded a valuation allowance of $17,100,000 and $15,555,000, respectively, against deferred tax assets in excess of deferred tax liabilities in the accompanying condensed consolidated financial statements. As of June 30, 2017 and December 31, 2016, we had federal income tax net operating loss carryforwards of approximately $19,000,000 and $18,500,000, respectively, which expire at various dates beginning in 2031.