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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014
Income Taxes |  |  |
Net deferred tax assets | $ 56,400 |  | $ 38,300
Income tax provision | $ 10,415 | $ 2,001 |
Effective income tax rate (as a percent) | 84.78% | 77.52% |
Percent of pretax (loss) income |  |  |
Actual effective income tax rate (as a percent) | 84.78% | 77.52% |
Correction of the failed spin-off-leaseback accounting treatment |  |  |
Income Taxes |  |  |
Income tax provision | $ 5,100 | $ 200 |

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