Income Taxes	6 Months Ended
Jun. 30, 2013
Income Taxes [Abstract]
Income Taxes	Note 10. Income Taxes The Company’s combined effective income tax rate on continuing operations was 36.6% and 36.9% for the three-month periods ended June 30, 2013 and 2012, respectively. The Company’s combined effective income tax rate on continuing operations was 33.1% and 37.3% for the six-month periods ended June 30, 2013 and 2012, respectively. The Company’s effective tax rate for the three-month period ended June 30, 2013 includes the effect of state income taxes and other discrete items as well as a benefit for tax credits on second quarter 2013 research and development tax expenditures. The Company’s effective tax rate for the six-month period ended June 30, 2013 includes the effect of state income taxes and other discrete items, as well as a benefit for tax credits on first quarter 2013 and calendar year 2012 research and development tax expenditures, as legislation extending the research and development credit to 2012 and 2013 was enacted by Congress in January of 2013. The Company’s effective tax rate for the three and six-month periods ended June 30, 2012 did not include a benefit for research and development tax credits. The Company’s liability recorded for uncertain tax positions as of June 30, 2013 has not changed significantly in amount or composition since December 31, 2012.

Income Taxes

6 Months Ended

Jun. 30, 2013

Note 10. Income Taxes

The Company’s combined effective income tax rate on continuing operations was 36.6% and 36.9% for the three-month periods ended June 30, 2013 and 2012, respectively. The Company’s combined effective income tax rate on continuing operations was 33.1% and 37.3% for the six-month periods ended June 30, 2013 and 2012, respectively. The Company’s effective tax rate for the three-month period ended June 30, 2013 includes the effect of state income taxes and other discrete items as well as a benefit for tax credits on second quarter 2013 research and development tax expenditures. The Company’s effective tax rate for the six-month period ended June 30, 2013 includes the effect of state income taxes and other discrete items, as well as a benefit for tax credits on first quarter 2013 and calendar year 2012 research and development tax expenditures, as legislation extending the research and development credit to 2012 and 2013 was enacted by Congress in January of 2013. The Company’s effective tax rate for the three and six-month periods ended June 30, 2012 did not include a benefit for research and development tax credits.

The Company’s liability recorded for uncertain tax positions as of June 30, 2013 has not changed significantly in amount or composition since December 31, 2012.