Income Taxes	3 Months Ended
Mar. 31, 2012
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense for the three months ended March 31, 2012 was $0.2 million and for the three months ended March 31, 2011 the amount was immaterial. The increase in expense for the period ended March 31, 2012 is primarily attributable to increased expected tax profits in the United States that will result in federal alternative minimum tax and state taxes in the states that the Company has a meaningful presence. Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the carrying amounts of existing assets and liabilities in the financial statements and their respective tax bases using tax rates expected to be in effect during the years in which the basis differences reverse. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of a deferred tax asset will be realized. The ultimate realization of deferred tax assets is dependent upon the generation of sufficient future taxable income during the periods in which those temporary differences become deductible. A valuation allowance is recorded for loss carryforwards and other deferred tax assets where it is more likely than not that such deferred tax assets will not be realized. The Company believes it is more likely than not that they would not be able to utilize these deferred tax assets in the future and as a result the Company has recorded a full valuation allowance on the U.S. federal and state deferred tax assets through March 31, 2012. As of March 31, 2012, there were no material changes to either the nature or the amounts of the uncertain tax positions previously determined for the year ended December 31, 2011.

Income Taxes

3 Months Ended

Mar. 31, 2012

Income tax expense for the three months ended March 31, 2012 was $0.2 million and for the three months ended March 31, 2011 the amount was immaterial. The increase in expense for the period ended March 31, 2012 is primarily attributable to increased expected tax profits in the United States that will result in federal alternative minimum tax and state taxes in the states that the Company has a meaningful presence.

Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the carrying amounts of existing assets and liabilities in the financial statements and their respective tax bases using tax rates expected to be in effect during the years in which the basis differences reverse.

In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of a deferred tax asset will be realized. The ultimate realization of deferred tax assets is dependent upon the generation of sufficient future taxable income during the periods in which those temporary differences become deductible. A valuation allowance is recorded for loss carryforwards and other deferred tax assets where it is more likely than not that such deferred tax assets will not be realized. The Company believes it is more likely than not that they would not be able to utilize these deferred tax assets in the future and as a result the Company has recorded a full valuation allowance on the U.S. federal and state deferred tax assets through March 31, 2012.

As of March 31, 2012, there were no material changes to either the nature or the amounts of the uncertain tax positions previously determined for the year ended December 31, 2011.