Income Taxes	9 Months Ended
Jan. 27, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 12. Income Taxes 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, and 2017 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 January 27, 2018, we had $3,179 of unrecognized tax benefits which would reduce our effective tax rate if recognized. On December 22, 2017, President Trump signed the U.S. Tax Cuts and Jobs Act (the “Tax Act”) into law. The Tax Act makes broad and complex changes to the U.S. tax code. Some of the most significant provisions of the Tax Act impacting us include a reduction of the U.S. federal corporate income tax rate from 35% to 21%, a one-time "deemed repatriation" tax on previously untaxed accumulated earnings and profits of certain subsidiaries in non-U.S. jurisdictions, and a transition of U.S. international taxation from a worldwide tax system to a territorial tax system. GAAP accounting for income taxes requires us to record the impact of any tax law change in the quarter the law change is enacted. On December 22, 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 118 which provides additional guidance allowing companies to record provisional amounts during a measurement period, not to exceed one year from the enactment date of the Tax Act, to account for the impacts of the Tax Act in their financial statements when companies do not have the necessary information available, prepared or analyzed in reasonable detail to complete their accounting for the effects of the changes in the Tax Act. We have accounted for the impacts of the Tax Act to the extent a reasonable estimate could be made during the quarter ended January 27, 2018. We will continue to refine our estimates throughout the measurement period or until the accounting is complete, and the impact of the Tax Act may differ from these estimates, possibly materially, due to, among other things, changes in estimates and assumptions that we have made. As a result, we have recorded a provisional reduction to our net deferred tax asset (which represents future tax benefits) of $3,679 which resulted in a corresponding increase to income tax expense for the quarter ended January 27, 2018. The revaluation of our net deferred tax asset is subject to further adjustments during the measurement period due to the complexity of determining our net deferred tax asset as of the enactment date of the Tax Act. Some of the information necessary to determine the accounting impacts of the tax rate change includes finalization of our fiscal 2018 tax return as well as refining the analysis of which existing deferred balances at the enactment date will reverse in fiscal 2018 and which deferred balances will reverse after fiscal 2018. Additionally, we have recorded a provisional increase to income tax expense of $601 for the one-time deemed repatriation tax. The estimate of the deemed repatriation tax is based, in part, on the amount of cash and other specified assets anticipated to be held by Daktronics’ foreign subsidiaries as of April 28, 2018. As a result, the final amount may change as the amounts are finalized. We plan to pay the tax payable in installments in accordance with the Tax Act.

Note 12. Income Taxes

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, and 2017 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 January 27, 2018, we had $3,179 of unrecognized tax benefits which would reduce our effective tax rate if recognized.

On December 22, 2017, President Trump signed the U.S. Tax Cuts and Jobs Act (the “Tax Act”) into law. The Tax Act makes broad and complex changes to the U.S. tax code. Some of the most significant provisions of the Tax Act impacting us include a reduction of the U.S. federal corporate income tax rate from 35% to 21%, a one-time "deemed repatriation" tax on previously untaxed accumulated earnings and profits of certain subsidiaries in non-U.S. jurisdictions, and a transition of U.S. international taxation from a worldwide tax system to a territorial tax system.

GAAP accounting for income taxes requires us to record the impact of any tax law change in the quarter the law change is enacted. On December 22, 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 118 which provides additional guidance allowing companies to record provisional amounts during a measurement period, not to exceed one year from the enactment date of the Tax Act, to account for the impacts of the Tax Act in their financial statements when companies do not have the necessary information available, prepared or analyzed in reasonable detail to complete their accounting for the effects of the changes in the Tax Act. We have accounted for the impacts of the Tax Act to the extent a reasonable estimate could be made during the quarter ended January 27, 2018. We will continue to refine our estimates throughout the measurement period or until the accounting is complete, and the impact of the Tax Act may differ from these estimates, possibly materially, due to, among other things, changes in estimates and assumptions that we have made.

As a result, we have recorded a provisional reduction to our net deferred tax asset (which represents future tax benefits) of $3,679 which resulted in a corresponding increase to income tax expense for the quarter ended January 27, 2018. The revaluation of our net deferred tax asset is subject to further adjustments during the measurement period due to the complexity of determining our net deferred tax asset as of the enactment date of the Tax Act. Some of the information necessary to determine the accounting impacts of the tax rate change includes finalization of our fiscal 2018 tax return as well as refining the analysis of which existing deferred balances at the enactment date will reverse in fiscal 2018 and which deferred balances will reverse after fiscal 2018.

Additionally, we have recorded a provisional increase to income tax expense of $601 for the one-time deemed repatriation tax. The estimate of the deemed repatriation tax is based, in part, on the amount of cash and other specified assets anticipated to be held by Daktronics’ foreign subsidiaries as of April 28, 2018. As a result, the final amount may change as the amounts are finalized. We plan to pay the tax payable in installments in accordance with the Tax Act.