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Income Taxes	3 Months Ended
	Mar. 31, 2012
Income Taxes
Income Taxes	6.  Income Taxes Our effective income tax rates for the three months ended March 31, 2012 and 2011 were 33.2% and 33.3%, respectively. Permanent items that impacted our effective income tax rates were not materially different in amounts during these periods and relate mainly to company-owned life insurance policies and domestic production activities deductions.

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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.

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