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Income Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Income Taxes |  |  |  |  |
Provision (benefit) for income taxes, as a percentage of income before income taxes | 24.70% | 38.20% | 19.50% | (11.80%) |
Statutory U.S. federal income tax rate (as a percent) | 35.00% | 35.00% | 35.00% | 35.00% |
Intercompany dividends paid by foreign subsidiaries to the U.S. corporation. |  |  |  | $ 21,500 |
Income tax benefit |  |  |  | $ 6,720 |
Accrued amount related to unrecognized tax positions | $ 7,058 |  | $ 7,058 |  | $ 6,598

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