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Income Taxes
3 Months Ended
Apr. 04, 2015
Income Tax Disclosure [Abstract]  
Income Taxes

Note 6—Income Taxes

Income tax benefit was $9.4 million on pretax loss of $10.6 million for the three months ended April 4, 2015, as compared to an income tax benefit of $0.5 million on pretax loss of $3.2 million for the three months ended March 29, 2014.

With the release of our federal tax valuation allowance in the United States during the fourth quarter of 2014, we are now able to realize tax benefits generated in the United States. As we have significant global permanent book to tax differences that exceed our estimated income before taxes on an annual basis, small changes in our estimated income before taxes can cause material fluctuations in our estimated effective tax rate on a quarterly basis. We have therefore calculated our quarterly income tax provision for the quarter ended April 4, 2015 on a discrete basis rather than using the estimated annual effective tax rate for the year, in accordance with Accounting Standards Codification 740.