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Federal and State Income Taxes
3 Months Ended
Mar. 31, 2014
Income Tax Disclosure [Abstract]  
Federal and State Income Taxes
(13) Federal and State Income Taxes

The reconciliations of income (loss) attributable to continuing operations at the U.S. federal statutory tax rate to income tax expense are as follows (in thousands):
 
 
Three Months Ended
 
 
March 31,
 
 
2014
 
2013
Amount:
 
 
 
 
Federal statutory tax
 
$
40,090

 
$
47,654

Tax exempt revenue
 
(1,991
)
 
(1,742
)
Effect of state income taxes, net of federal benefit
 
2,870

 
3,378

Utilization of tax credits
 
(2,630
)
 
(1,722
)
Bank-owned life insurance
 
(768
)
 
(885
)
Charitable contributions to BOKF Foundation
 
(427
)
 

Other, net
 
357

 
413

Total
 
$
37,501

 
$
47,096


 
 
Three Months Ended
 
 
March 31,
 
 
2014
 
2013
Percent of pretax income:
 
 
 
 
Federal statutory tax
 
35
 %
 
35
 %
Tax exempt revenue
 
(2
)
 
(1
)
Effect of state income taxes, net of federal benefit
 
3

 
3

Utilization of tax credits
 
(2
)
 
(1
)
Bank-owned life insurance
 
(1
)
 
(1
)
Charitable contributions to BOKF Foundation
 

 

Other, net
 

 

Total
 
33
 %
 
35
 %