XML 42 R13.htm IDEA: XBRL DOCUMENT v2.4.0.6
Income Taxes
 3 Months Ended
Mar. 31, 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

 

 

 

March 31,

 

 

 

2012

 

2011

 

 

 

 

 

 

 

Income tax provision

 

$

6,615

 

$

10,415

 

 

 

 

 

 

 

Effective income tax rate

 

12.0

%

20.0

%

 

Our provision for income taxes for each of the three-month periods ended March 31, 2012 and 2011 were calculated based on the estimated annual effective tax rate for the full 2012 fiscal year, adjusted for an income tax benefit of $3.3 million for a discrete item related to a change in estimate in an uncertain tax position, and 2011 fiscal year.  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.