|
Income Taxes (Details)
|
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2012
|
Mar. 31, 2011
|
|
| Income Taxes | ||
| Effective tax rate (as a percent) | 44.70% | 40.00% |
| Federal statutory tax rate (as a percent) | 35.00% | 35.00% |