|
Income Taxes (Details) (USD $)
|
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Income Tax Disclosure [Abstract] | ||
| Income before income tax | $ 58,151,000 | $ 146,603,000 |
| Provision for income taxes | 28,506,000 | 38,015,000 |
| Effective tax rate | 49.00% | 25.90% |
| Change in unrecognized tax benefits for the period | 8,100,000 | |
| Unrecognized tax benefits approximate amount of estimated reduction within the next twelve months | $ 11,000,000 | |