Income Taxes	9 Months Ended
Sep. 30, 2012
Income Tax Disclosure [Abstract]
Income Taxes	7 Income Taxes The provision for income taxes as a percentage of earnings before income taxes for the third quarter of 2012 was 35.9% compared to 14.8% in the third quarter of 2011. The provision for income taxes as a percentage of earnings before income taxes for the nine-month period ended September 30, 2012 was 35.4% compared to 29.2% in the same period of 2011. The nine-month period of 2012 results include the recognition of favorable state income tax audit outcomes for prior periods. The third quarter and nine-month period of 2011 results included recognition of previously unrecognized tax benefits for certain deductions that were taken on prior tax returns. These benefits totaled $1.5 million and were recognized in earnings in the third quarter of 2011 due to the realization that such benefits became more likely than not upon the conclusion of an IRS audit of the Company's 2009 federal income tax return. Without these benefits, the provision for income taxes as a percentage of earnings before income taxes would have been 33.1% and 35% for the three- and nine-month periods ended September 30, 2011.

Income Taxes

9 Months Ended

Sep. 30, 2012

7 Income Taxes

The provision for income taxes as a percentage of earnings before income taxes for the third quarter of 2012 was 35.9% compared to 14.8% in the third quarter of 2011. The provision for income taxes as a percentage of earnings before income taxes for the nine-month period ended September 30, 2012 was 35.4% compared to 29.2% in the same period of 2011. The nine-month period of 2012 results include the recognition of favorable state income tax audit outcomes for prior periods. The third quarter and nine-month period of 2011 results included recognition of previously unrecognized tax benefits for certain deductions that were taken on prior tax returns. These benefits totaled $1.5 million and were recognized in earnings in the third quarter of 2011 due to the realization that such benefits became more likely than not upon the conclusion of an IRS audit of the Company's 2009 federal income tax return. Without these benefits, the provision for income taxes as a percentage of earnings before income taxes would have been 33.1% and 35% for the three- and nine-month periods ended September 30, 2011.