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Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2012
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense totaled $10,681 and $11,265 for the second quarters of 2012 and 2011, representing effective tax rates of 22.1 percent and 34.6 percent during the respective periods. For the first six months of 2012, income tax expense totaled $29,035 compared to $48,625 during 2011. The effective tax rates for the six-month periods equals 28.4 percent and 36.9 percent, respectively. The lower effective tax rates for 2012 result from recognition of a $6,449 credit to income tax expense resulting from the favorable outcome of state tax audits for the period 2008-2010, net of additional federal taxes.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

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+ Details