Income Taxes	3 Months Ended
Jul. 28, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 12. Income Taxes Our effective tax rate varies from the federal statutory rate primarily due to state and local taxes, research and development tax credit, and the base erosion anti-abuse tax. We recorded an effective tax rate benefit of 13.1 percent in the first quarter of 2019 as compared to an effective tax rate expense of 29.7 percent for the first quarter of fiscal 2018. The decrease in the effective tax rate is primarily due to projected tax credits in excess of our projected tax liability in conjunction with the decrease in the federal statutory tax rate pursuant to the U.S. Tax Cuts and Jobs Act (the "Tax Act"). We are subject to U.S. federal income tax as well as income taxes of multiple state and foreign jurisdictions. Due to various factors and operating in multiple state and foreign jurisdictions, our effective tax is subject to fluctuation. As a result of the expiration of statutes of limitations, our fiscal years 2015, 2016, 2017, and 2018 are the remaining years open under statutes of limitations for federal and state income tax examinations. Certain subsidiaries are also subject to income tax in several foreign jurisdictions which have open tax years varying by jurisdiction beginning in fiscal 2008. As of July 28, 2018, we had $3,336 of unrecognized tax benefits which would reduce our effective tax rate if recognized. Pursuant to Tax Act, the SEC staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Act (SAB 118), which allows us to record provisional amounts during a measurement period not to extend beyond one year from the enactment date. The accounting for the deemed repatriation tax is provisional and incomplete due to continued guidance from the U.S. tax authority and our ongoing analysis of final year-end data and tax positions. This provisional estimate was included in our condensed consolidated financial statements as of July 28, 2018 and April 28, 2018. We did not make any measurement period adjustments during the first quarter of 2019. We expect to complete the analysis within the measurement period in accordance with SAB 118. Also, we have determined that we will recognize the Global Intangible Low Taxed Income (GILTI) as a period cost if, and when, incurred. As of July 28, 2018, undistributed earnings of our foreign subsidiaries were considered to have been reinvested indefinitely.

Note 12. Income Taxes

Our effective tax rate varies from the federal statutory rate primarily due to state and local taxes, research and development tax credit, and the base erosion anti-abuse tax. We recorded an effective tax rate benefit of 13.1 percent in the first quarter of 2019 as compared to an effective tax rate expense of 29.7 percent for the first quarter of fiscal 2018. The decrease in the effective tax rate is primarily due to projected tax credits in excess of our projected tax liability in conjunction with the decrease in the federal statutory tax rate pursuant to the U.S. Tax Cuts and Jobs Act (the "Tax Act").

We are subject to U.S. federal income tax as well as income taxes of multiple state and foreign jurisdictions. Due to various factors and operating in multiple state and foreign jurisdictions, our effective tax is subject to fluctuation. As a result of the expiration of statutes of limitations, our fiscal years 2015, 2016, 2017, and 2018 are the remaining years open under statutes of limitations for federal and state income tax examinations. Certain subsidiaries are also subject to income tax in several foreign jurisdictions which have open tax years varying by jurisdiction beginning in fiscal 2008.

As of July 28, 2018, we had $3,336 of unrecognized tax benefits which would reduce our effective tax rate if recognized.

Pursuant to Tax Act, the SEC staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Act (SAB 118), which allows us to record provisional amounts during a measurement period not to extend beyond one year from the enactment date. The accounting for the deemed repatriation tax is provisional and incomplete due to continued guidance from the U.S. tax authority and our ongoing analysis of final year-end data and tax positions. This provisional estimate was included in our condensed consolidated financial statements as of July 28, 2018 and April 28, 2018. We did not make any measurement period adjustments during the first quarter of 2019. We expect to complete the analysis within the measurement period in accordance with SAB 118. Also, we have determined that we will recognize the Global Intangible Low Taxed Income (GILTI) as a period cost if, and when, incurred. As of July 28, 2018, undistributed earnings of our foreign subsidiaries were considered to have been reinvested indefinitely.