Income Taxes

3 Months Ended

Mar. 31, 2018

Income Taxes [Abstract]

Income Taxes

11.Income Taxes

At December 31, 2017, we had federal and state net operating loss carryforwards of  $373.3 million and $236.3 million, respectively, available to offset against future taxable income, which expire in 2018 through 2037, of which $236.9 million and $236.3 million, respectively, are not subject to limitation under Section 382 of the Internal Revenue Code.