BASIS OF PRESENTATION (Policies)	3 Months Ended
BASIS OF PRESENTATION (Policies)	Jul. 28, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recently Issued and Recently Adopted Accounting Pronouncements	In February 2016, the FASB issued ASU No. 2016-02, "Leases (ASC 842)," which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e. lessees and lessors). The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. The new standard requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase by the lessee. This classification will determine whether lease expense is recognized based on an effective interest method or on a straight line basis over the term of the lease. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. Leases with a term of 12 months or less will be accounted for similar to existing guidance for operating leases today. Accounting Standards Codification ("ASC") 842 supersedes the previous leases standard, ASC 840 Leases. The amendments in this update are effective for fiscal years beginning after December 15, 2018, which is our fiscal 2020, beginning on April 28, 2019. This ASU is required to be applied with a modified retrospective approach and requires application of the new standard at the beginning of the earliest comparative period presented. In July 2018, the FASB issued ASU No. 2018-11, "Leases (Topic 842): Targeted Improvements." In issuing ASU No. 2018-11, the FASB decided to provide another transition method in addition to the existing transition method by allowing entities to initially apply the new leases standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. We are currently evaluating the impact that ASU 2016-02 and ASU 2018-11 will have on our condensed consolidated financial statements. RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS
Goodwill and Intangible Assets	We review our goodwill and other intangible assets for impairment whenever events or changes in circumstances indicate that the carrying amount of these assets may not be recoverable, and at least annually in accordance with ASC No. 350, "Intangibles — Goodwill and Others." The values assigned to goodwill and intangible assets are normally based on estimates and judgments regarding expectations for the success and life cycle of products and technologies acquired. A severe decline in expectations could result in significant impairment charges, which could have a material adverse effect on our financial condition and results of operations.
Net Income Per Share	Basic net income per share is calculated by dividing net income by the weighted average number of common shares outstanding for the applicable period. Diluted net income per share is calculated after adjusting the denominator of the basic net income per share calculation for the effect of all potentially dilutive stock compensation awards outstanding during the period.
Segment Information	The accounting policies of the segments are the same as those described in the summary of significant accounting policies in our Form 10-K for the fiscal year ended April 28, 2018, with the exception of accounting policies for revenue, which can be found in Note 3, "Revenue," on this Form 10-Q. We allocate resources to segments based on operating income. Transfers between segments are recorded using internal transfer prices set by us.
Contingencies	Certain litigation arising in the normal course of business is pending against us. We are, from time-to-time, subject to various legal actions and claims incidental to our business, including those arising out of alleged defects, breach of contracts, employment-related matters, environmental matters and intellectual property matters. We consider insurance coverage and third-party indemnification when determining required accruals for pending litigation and claims. Although the outcome of potential legal actions and claims cannot be determined, it is our opinion, based on the information available, that we have adequate reserves for these liabilities.