Income Taxes	3 Months Ended
Mar. 31, 2017
Income Taxes
Income Taxes	9. Income taxes The provision for income taxes for the three-month period ended March 31, 2017 represents the interim period tax allocation of the federal and state alternative minimum tax based on the Company’s projected year-end effective income tax rates which cannot be offset by the Company’s net operating loss carryforwards, No provision for income tax was made for the three-month period ended March 31, 2016 because the Company incurred a loss from operations and its projected year end effective tax rate was zero. The Company has deferred tax assets consisting primarily of net operating loss and tax credit carryforwards that have been fully offset by a valuation allowance.

Income Taxes

3 Months Ended

Mar. 31, 2017

9. Income taxes

The provision for income taxes for the three-month period ended March 31, 2017 represents the interim period tax allocation of the federal and state alternative minimum tax based on the Company’s projected year-end effective income tax rates which cannot be offset by the Company’s net operating loss carryforwards, No provision for income tax was made for the three-month period ended March 31, 2016 because the Company incurred a loss from operations and its projected year end effective tax rate was zero. The Company has deferred tax assets consisting primarily of net operating loss and tax credit carryforwards that have been fully offset by a valuation allowance.