Income Taxes	9 Months Ended
Sep. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended September 30, 2015, the Company recorded an income tax benefit from continuing operations of approximately $0.1 million. This benefit relates to a reduction of unrecognized tax benefits due to the lapse of the related statute of limitations. Income tax expense for nine months ended September 30, 2015 was not material. For the nine and three months ended September 30, 2014, the Company recorded an income tax benefit of $8.6 million and $0.4 million, respectively. The income tax benefit for these periods relates primarily to operating losses from continuing operations and the utilization of a portion of the Company's deferred tax assets to offset the income tax expense from discontinued operations arising from the gain on the sale of StreetLinks during the second quarter of 2014. For the nine and three months ended September 30, 2015, income tax expense from discontinued operations was not material. For the nine months ended September 30, 2014, the Company recorded income tax expense from discontinued operations of $8.6 million, which relates to the income from discontinued operations for the period arising primarily from the gain on the sale of StreetLinks. The Company recorded an income tax benefit from discontinued operations of $0.1 million for the three months ended September 30, 2014, which arises due to the loss on discontinued operations for the period. The consolidated income tax expense (benefit) was not material for the nine and three months ended September 30, 2015, as the Company's effective tax rate is expected to be close to 0% due to the valuation allowance against the Company's deferred tax assets, which is discussed further below. The consolidated income tax expense was not material for the nine months ended September 30, 2014, while the consolidated income tax benefit of $0.5 million for the three months ended September 30, 2014 arises due to the losses from both continuing and discontinued operations for the period. Prior to 2014, the Company determined that it was no longer more likely than not that it will recognize a portion of its deferred tax assets. Therefore, as of both September 30, 2015 and December 31, 2014, the Company maintained a full valuation allowance against its deferred tax assets of $276.9 million and $268.6 million, respectively. The Company's determination of the extent to which its deferred tax assets will be realized requires the exercise of significant judgment, based in part on business plans and expectations about future outcomes. In the event the actual results differ from these estimates in future periods, the Company may need to adjust the valuation allowance, which could materially impact our financial position and results of operations. The Company will continue to assess the need for a valuation allowance in future periods. As of September 30, 2015 and December 31, 2014, the total gross amount of unrecognized tax benefits was $0.4 million. and $0.5 million, respectively. These amounts also represent the total amount of unrecognized tax benefits that would impact the effective tax rate in the respective periods. The Company does not anticipate a material reduction of the unrecognized tax benefits due to the lapse of the related statute of limitations in the next twelve months.

Income Taxes

For the three months ended September 30, 2015, the Company recorded an income tax benefit from continuing operations of approximately $0.1 million. This benefit relates to a reduction of unrecognized tax benefits due to the lapse of the related statute of limitations. Income tax expense for nine months ended September 30, 2015 was not material. For the nine and three months ended September 30, 2014, the Company recorded an income tax benefit of $8.6 million and $0.4 million, respectively. The income tax benefit for these periods relates primarily to operating losses from continuing operations and the utilization of a portion of the Company's deferred tax assets to offset the income tax expense from discontinued operations arising from the gain on the sale of StreetLinks during the second quarter of 2014.

For the nine and three months ended September 30, 2015, income tax expense from discontinued operations was not material. For the nine months ended September 30, 2014, the Company recorded income tax expense from discontinued operations of $8.6 million, which relates to the income from discontinued operations for the period arising primarily from the gain on the sale of StreetLinks. The Company recorded an income tax benefit from discontinued operations of $0.1 million for the three months ended September 30, 2014, which arises due to the loss on discontinued operations for the period.

The consolidated income tax expense (benefit) was not material for the nine and three months ended September 30, 2015, as the Company's effective tax rate is expected to be close to 0% due to the valuation allowance against the Company's deferred tax assets, which is discussed further below. The consolidated income tax expense was not material for the nine months ended September 30, 2014, while the consolidated income tax benefit of $0.5 million for the three months ended September 30, 2014 arises due to the losses from both continuing and discontinued operations for the period.

Prior to 2014, the Company determined that it was no longer more likely than not that it will recognize a portion of its deferred tax assets. Therefore, as of both September 30, 2015 and December 31, 2014, the Company maintained a full valuation allowance against its deferred tax assets of $276.9 million and $268.6 million, respectively. The Company's determination of the extent to which its deferred tax assets will be realized requires the exercise of significant judgment, based in part on business plans and expectations about future outcomes. In the event the actual results differ from these estimates in future periods, the Company may need to adjust the valuation allowance, which could materially impact our financial position and results of operations. The Company will continue to assess the need for a valuation allowance in future periods.

As of September 30, 2015 and December 31, 2014, the total gross amount of unrecognized tax benefits was $0.4 million. and $0.5 million, respectively. These amounts also represent the total amount of unrecognized tax benefits that would impact the effective tax rate in the respective periods. The Company does not anticipate a material reduction of the unrecognized tax benefits due to the lapse of the related statute of limitations in the next twelve months.