Income Taxes

9 Months Ended

Sep. 30, 2011

Income Taxes [Abstract]

Income Taxes

(4) Income Taxes

Our effective tax rate increased to 43.5% for the three months ended September 30, 2011, compared to 38.5% for the three months ended September 30, 2010, primarily due to an increase in the level of certain expenses related to international operations for which we currently are not able to recognize a tax benefit, as well as an unfavorable change in the impact on the effective tax rate from the routine reconciliation of tax return filings.

 Our effective tax rate increased to 43.6% for the nine months ended September 30, 2011, compared to 39.0% for the nine months ended September 30, 2010, primarily due to the favorable impact on the 2010 effective tax rate of an earn-out adjustment recorded during the nine months ended September 30, 2010, as well as an increase during the nine months ended September 30, 2011 in the level of certain expenses related to international operations for which we currently are not able to recognize a tax benefit.

We file income tax returns in the U.S. federal jurisdiction and in various state and foreign jurisdictions.  Tax years remaining subject to examination in these jurisdictions include 2008 to present.