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Income Taxes
6 Months Ended
Jun. 30, 2018
Income Tax Disclosure [Abstract]  
Income Taxes

12. Income Taxes

 

At December 31, 2017, we had federal and state net operating loss carryforwards as 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.