Management Estimates	9 Months Ended
Sep. 30, 2011
Management Estimates [Abstract]
Management Estimates	2. Management Estimates These consolidated financial statements have been prepared on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States. The preparation of consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate estimates, including those related to residual values, estimated asset lives, bad debts, income taxes, contingencies and litigation. On July 1, 2010 and again on July 1, 2011, we adjusted the depreciation for certain older engine types within the portfolio. It is our policy to review estimates regularly to reflect the cost of equipment over the useful life of these engines. We base our estimate on historical experience and on various other assumptions that are believed to be reasonable under the circumstances for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. Long-lived assets and certain identifiable intangibles to be held and used by an entity are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, and long-lived assets to be disposed of generally are reported at the lower of carrying amount or fair value less cost to sell. Management believes that the accounting policies on revenue recognition, maintenance reserves and expenditures, useful life of equipment, asset residual values, asset impairment and allowance for doubtful accounts are critical to the results of operations. If the useful lives or residual values are lower than those estimated by us, upon sale of the asset a loss may be realized. Significant management judgment is required in the forecasting of future operating results, which are used in the preparation of projected undiscounted cash-flows and should different conditions prevail, material impairment write-downs may occur.

Management Estimates

9 Months Ended

Sep. 30, 2011

2. Management Estimates

These consolidated financial statements have been prepared on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States.

The preparation of consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate estimates, including those related to residual values, estimated asset lives, bad debts, income taxes, contingencies and litigation. On July 1, 2010 and again on July 1, 2011, we adjusted the depreciation for certain older engine types within the portfolio. It is our policy to review estimates regularly to reflect the cost of equipment over the useful life of these engines. We base our estimate on historical experience and on various other assumptions that are believed to be reasonable under the circumstances for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Long-lived assets and certain identifiable intangibles to be held and used by an entity are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, and long-lived assets to be disposed of generally are reported at the lower of carrying amount or fair value less cost to sell.

Management believes that the accounting policies on revenue recognition, maintenance reserves and expenditures, useful life of equipment, asset residual values, asset impairment and allowance for doubtful accounts are critical to the results of operations. If the useful lives or residual values are lower than those estimated by us, upon sale of the asset a loss may be realized. Significant management judgment is required in the forecasting of future operating results, which are used in the preparation of projected undiscounted cash-flows and should different conditions prevail, material impairment write-downs may occur.