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Income Taxes (Tables)
6 Months Ended
Jun. 30, 2011
Income Taxes  
Schedule of Income tax provision and the respective effective tax rates

 

 

 

 

For the Three Months ended

 

For the Six Months ended

 

 

 

June 30,

 

June 30,

 

 

 

2011

 

2010

 

2011

 

2010

 

 

 

 

 

 

 

 

 

 

 

Income tax provision

 

$

11,049

 

$

7,765

 

$

21,464

 

$

15,446

 

 

 

 

 

 

 

 

 

 

 

Effective income tax rate

 

17.9

%

17.3

%

18.9

%

17.9

%