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Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | ---
Income taxes |  |
Net deferred tax assets prior to valuation allowance | $ 100,591 | $ 92,315
Travel Centers of America LLC |  |
Income taxes |  |
Net deferred tax assets prior to valuation allowance | 66,062 | 67,973
Valuation allowance provided (as a percent) | 100.00% | 100.00%
Net operating loss carryforwards for federal income tax purpose, subject to expiration | 137,920 |
Alternative minimum tax credit carryforward not subject to expiration | 4,430 |
General business tax credits not subject to expiration | 6,600 |
Consolidated TRS Group |  |
Income taxes |  |
Net deferred tax assets prior to valuation allowance | 30,806 | 23,430
Valuation allowance provided (as a percent) | 100.00% | 100.00%
Net operating loss carryforwards for federal income tax purpose, subject to expiration | $ 55,976 |

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