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Income Taxes
6 Months Ended
Jun. 30, 2012
Income Taxes [Abstract]  
Income Taxes
(9)   Income Taxes:
The following is a reconciliation of the provision for income taxes computed at federal statutory rates to the effective rates:
 
   For the three months ended     For the six months ended 
   June 30,   June 30, 
   
2012
   
2011
   
2012
   
2011
 
                 
Consolidated tax provision at federal statutory rate
  35.0%  35.0%  35.0%  35.0%
Reversal of tax credits
  -   14.8   -   6.4 
State income tax provisions, net of federal income tax benefit
  1.5   3.5   2.7   3.8 
All other, net
  (1.7)  (0.9)  (1.0)  (0.2)
Effective tax rate
  34.8%  52.4%  36.7%  45.0%
 
Income taxes for the three and six months ended June 30, 2011 includes the impact of a $10.5 million charge resulting from the enactment on May 25, 2011 of the Michigan Corporate Income Tax which eliminated certain future tax deductions.

The amount of our uncertain tax positions whose statute of limitations are expected to expire during the next twelve months and which would affect our effective tax rate is $14 million as of June 30, 2012.