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Income Taxes
 6 Months Ended
Jun. 30, 2012
Income Taxes  
Income Taxes

5.              Income Taxes

 

Our income tax provision for the periods presented and the respective effective tax rates for such periods are as follows (in thousands, except for tax rates):

 

 

 

For the Three Months ended

 

For the Six Months ended

 

 

 

June 30,

 

June 30,

 

 

 

2012

 

2011

 

2012

 

2011

 

 

 

 

 

 

 

 

 

 

 

Income tax provision

 

$

11,951

 

$

11,049

 

$

18,566

 

$

21,464

 

 

 

 

 

 

 

 

 

 

 

Effective income tax rate

 

17.9

%

17.9

%

15.2

%

18.9

%

 

Our provision for income taxes for each of the three-month and six-month periods ended June 30, 2012 and 2011 were calculated based on the estimated annual effective tax rate for the full 2012 and 2011 fiscal years.  The provision for income taxes for the six-month period ended June 30, 2012 includes an adjustment for an income tax benefit of $3.3 million for a discrete item related to a change in estimate in an uncertain tax position which was recognized in the three-month period ended March 31, 2012.  The actual effective tax rate for the full 2012 fiscal year may be materially different as a result of differences between estimated versus actual results and the geographic tax jurisdictions in which the results are earned.