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Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2013
Income Tax Disclosure [Abstract]
Income taxes	Income Taxes The effective tax rate was 31.5% in the third quarter of 2013 compared to 32.1% for same period of 2012. The effective tax rate was 31.7% in the first nine months of 2013 compared to 32.5% for the same period of 2012. Effective tax rates differ from statutory federal income tax rates, primarily due to the domestic manufacturing deduction, provisions for state and local income taxes and permanent tax differences. The decrease in the effective tax rate is primarily due to realized benefits of approximately $1 million from the filing of an amended federal tax return for 2009, specifically related to increased Research & Development tax credits.

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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