Income Taxes	15 Months Ended
Mar. 31, 2013
Income Taxes	4. Income Taxes The effective tax rate for the quarter ended March 31, 2013 was approximately 29% compared to approximately 28% for the same period in 2012. The increase in the effective tax rate for the quarter ended March 31, 2013 reflected the discrete tax effect of a write-down of an insurance receivable (see Note 7 of the notes to condensed consolidated financial statements), which was incurred in a low tax jurisdiction. The effective tax rate for the current quarter was also impacted by the American Taxpayer Relief Act of 2012, which was signed into law on January 2, 2013 and retroactively reinstated the research tax credit. Although the reinstatement of this tax credit is retroactive to January 1, 2012, the enactment of this legislation in 2013 precluded the company from recording the benefit in 2012. As a result, the company’s income tax provision was reduced by approximately $3.7 million during the first quarter of 2013 to recognize the 2012 benefit of this tax credit that would have been recorded in 2012. At March 31, 2013, the total amount of liability for unrecognized tax benefits related to federal, state and foreign taxes was $45.4 million (of which $38.0 million would impact the effective tax rate, if recognized) plus $5.3 million of accrued interest. At December 31, 2012, the liability for unrecognized tax benefits was $43.4 million plus $4.8 million of accrued interest. Depending upon the result of open tax examinations and/or the expiration of applicable statutes of limitation, the company believes it is reasonably possible that the total amount of unrecognized tax benefits may decrease by up to $18.4 million within the next 12 months.

Income Taxes

15 Months Ended

Mar. 31, 2013

4. Income Taxes

The effective tax rate for the quarter ended March 31, 2013 was approximately 29% compared to approximately 28% for the same period in 2012. The increase in the effective tax rate for the quarter ended March 31, 2013 reflected the discrete tax effect of a write-down of an insurance receivable (see Note 7 of the notes to condensed consolidated financial statements), which was incurred in a low tax jurisdiction. The effective tax rate for the current quarter was also impacted by the American Taxpayer Relief Act of 2012, which was signed into law on January 2, 2013 and retroactively reinstated the research tax credit. Although the reinstatement of this tax credit is retroactive to January 1, 2012, the enactment of this legislation in 2013 precluded the company from recording the benefit in 2012. As a result, the company’s income tax provision was reduced by approximately $3.7 million during the first quarter of 2013 to recognize the 2012 benefit of this tax credit that would have been recorded in 2012. At March 31, 2013, the total amount of liability for unrecognized tax benefits related to federal, state and foreign taxes was $45.4 million (of which $38.0 million would impact the effective tax rate, if recognized) plus $5.3 million of accrued interest. At December 31, 2012, the liability for unrecognized tax benefits was $43.4 million plus $4.8 million of accrued interest. Depending upon the result of open tax examinations and/or the expiration of applicable statutes of limitation, the company believes it is reasonably possible that the total amount of unrecognized tax benefits may decrease by up to $18.4 million within the next 12 months.