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Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2013
Income Taxes [Abstract]
Income Taxes	13. Income Taxes The Company's effective tax rate for the three and six months ended June 30, 2013 was 36.5% and 33.6%, respectively. The Company's effective tax rate for the three and six months ended June 30, 2012 was 34.0% and 34.6%, respectively. During the six months ended June 30, 2013, the Company recognized a benefit of $300 resulting from the enactment of the American Taxpayer Relief Act in January 2013, which extended retroactively, the federal research and development credit for two years from January 1, 2012 through December 31, 2013. Higher tax rates are anticipated in 2013 as fewer federal credits are expected to be available.

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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