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Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective tax rate was 29% for the six months ended June 30, 2013 compared to 30% for the six months ended June 30, 2012. In each case, the difference from the federal statutory rate of 35% was driven by income that was earned in foreign jurisdictions, which is taxed at lower rates. As of June 30, 2013, our gross liability for unrecognized tax benefits was $4.7 million. If fully recognized, these tax benefits would decrease our income tax expense by $4.7 million ($3.2 million, net of federal tax). Subject to the completion of certain audits or the expiration of the applicable statute of limitations, we believe it is reasonably possible that we will recognize $0.4 million in unrecognized tax benefits within the next 12 months.

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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