Income Taxes	9 Months Ended
Sep. 30, 2011
Income Taxes	13. Income Taxes The asset and liability method is used in accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for operating loss and tax credit carryforwards and for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. The Company’s net current deferred tax asset is comprised primarily of net operating loss carryforwards, and the net deferred tax liability is comprised primarily of the difference between the financial statement carrying amount and the tax basis of property and equipment. The increase in the net deferred tax asset during the nine months ended September 30, 2011 is due to net operating losses for tax purposes that are the result of accelerated depreciation on 2011 capital expenditures. The increase in the net deferred tax liability during the nine months ended September 30, 2011 includes the impact of the difference between the financial statement carrying amount and tax basis of property and equipment resulting from the acceleration of depreciation on 2011 capital expenditures. The accelerated tax depreciation includes the temporary 100% expensing of qualified property placed in service in 2011 provided for by the Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act of 2010. On January 1, 2010, the Company converted its Canadian operations from a Canadian branch to a controlled foreign corporation for Federal income tax purposes. Because the statutory tax rates in Canada are lower than those in the United States, this transaction triggered a $5.1 million reduction in the Company’s deferred tax liabilities, which is being amortized as a reduction to deferred income tax expense over the weighted average remaining useful life of the Canadian assets. As a result of the above conversion, the Company’s Canadian assets are no longer subject to United States taxation, provided that the related unremitted earnings are permanently reinvested in Canada. Effective January 1, 2010, the Company has elected to permanently reinvest these unremitted earnings in Canada, and it intends to do so for the foreseeable future. As a result, no deferred United States Federal or state income taxes have been provided on such unremitted foreign earnings, which totaled approximately $18.7 million as of September 30, 2011.

Income Taxes

9 Months Ended

Sep. 30, 2011

13. Income Taxes

The asset and liability method is used in accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for operating loss and tax credit carryforwards and for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. The Company’s net current deferred tax asset is comprised primarily of net operating loss carryforwards, and the net deferred tax liability is comprised primarily of the difference between the financial statement carrying amount and the tax basis of property and equipment. The increase in the net deferred tax asset during the nine months ended September 30, 2011 is due to net operating losses for tax purposes that are the result of accelerated depreciation on 2011 capital expenditures. The increase in the net deferred tax liability during the nine months ended September 30, 2011 includes the impact of the difference between the financial statement carrying amount and tax basis of property and equipment resulting from the acceleration of depreciation on 2011 capital expenditures. The accelerated tax depreciation includes the temporary 100% expensing of qualified property placed in service in 2011 provided for by the Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act of 2010.

On January 1, 2010, the Company converted its Canadian operations from a Canadian branch to a controlled foreign corporation for Federal income tax purposes. Because the statutory tax rates in Canada are lower than those in the United States, this transaction triggered a $5.1 million reduction in the Company’s deferred tax liabilities, which is being amortized as a reduction to deferred income tax expense over the weighted average remaining useful life of the Canadian assets.

As a result of the above conversion, the Company’s Canadian assets are no longer subject to United States taxation, provided that the related unremitted earnings are permanently reinvested in Canada. Effective January 1, 2010, the Company has elected to permanently reinvest these unremitted earnings in Canada, and it intends to do so for the foreseeable future. As a result, no deferred United States Federal or state income taxes have been provided on such unremitted foreign earnings, which totaled approximately $18.7 million as of September 30, 2011.