Basis of Presentation (Policies)	9 Months Ended
Feb. 01, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recently Issued Accounting Pronouncements	Recent Accounting Pronouncements There have been no material changes to our significant accounting policies and estimates as described in our Annual Report on Form 10-K for the fiscal year ended April 27, 2019, other than described in the Accounting Standards Adopted section below. Accounting Standards Adopted In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-02, Leases (Topic 842), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (that is, lessees and lessors). ASU 2016-02 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 of the leased asset by the lessee. This classification will determine whether the 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 greater than 12 months regardless of their classification. ASU 2016-02 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. In July 2018, the FASB issued ASU 2018-10, Codification Improvements to Topic 842 (Leases) and ASU 2018-11, Leases (Topic 842), Targeted Improvements, which provide (i) narrow amendments to clarify how to apply certain aspects of the new lease standard, (ii) entities with an additional transition method to adopt the new standard, and (iii) lessors with a practical expedient for separating components of a contract. We adopted ASU 2016-02 and its related guidance during the first quarter of fiscal 2020 for all agreements existing as of April 28, 2019. We elected the "comparatives under Accounting Standards Codification ("ASC") 840 option" as a transitional method, which allows us to initially apply the new lease requirements at the effective date. Comparative periods were not adjusted and will continue to be reported in accordance with prior lease guidance under ASC 840. We elected the package of practical expedients, which permits us not to reassess our prior conclusions about lease identification, lease classification and initial direct costs. In addition, we have elected the short-term lease recognition whereby we will not recognize operating leases related assets or liabilities for leases with a lease term of less than one year. We have also elected the practical expedient to not separate lease and non-lease components in the lease payments for all asset classes. This adoption did not have an impact on our condensed consolidated statements of operations, shareholders' equity and cash flows, and there was no adjustment to retained earnings. As of April 28, 2019, we recognized a right of use asset for operating leases of $11,101 and a current and non-current lease liability for operating leases of $2,745 and $8,356, respectively. The right of use operating assets are included in the "Investment in affiliates and other assets" line item, the current lease liabilities are included in the "Accrued expenses" line item, and the non-current lease liabilities are included in the "Other long-term obligations" line item in our condensed consolidated balance sheet. See "Note 12. Leases" for more information. Accounting Standards Not Yet Adopted In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350), which simplifies the subsequent measurement of goodwill by removing the second step of the two-step impairment test. The amendment requires an entity to perform its annual or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. A goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 is effective for interim and annual periods beginning after December 15, 2019 and will require adoption on a prospective basis. We are currently evaluating the effect that adopting ASU 2017-04 will have on our condensed consolidated financial statements and related disclosures. In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments, which provides guidance regarding the measurement and recognition of credit impairment for certain financial assets. ASU 2016-13 is effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted, and will require adoption on a modified retrospective basis. We are currently evaluating the effect that adopting ASU 2016-13, including all subsequent amendments and improvements to ASC Topic 326 issued by FASB, will have on our condensed consolidated financial statements and related disclosures.

Recent Accounting Pronouncements

There have been no material changes to our significant accounting policies and estimates as described in our Annual Report on Form 10-K for the fiscal year ended April 27, 2019, other than described in the Accounting Standards Adopted section below.

Accounting Standards Adopted

In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-02, Leases (Topic 842), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (that is, lessees and lessors). ASU 2016-02 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 of the leased asset by the lessee. This classification will determine whether the 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 greater than 12 months regardless of their classification. ASU 2016-02 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. In July 2018, the FASB issued ASU 2018-10, Codification Improvements to Topic 842 (Leases) and ASU 2018-11, Leases (Topic 842), Targeted Improvements, which provide (i) narrow amendments to clarify how to apply certain aspects of the new lease standard, (ii) entities with an additional transition method to adopt the new standard, and (iii) lessors with a practical expedient for separating components of a contract.

We adopted ASU 2016-02 and its related guidance during the first quarter of fiscal 2020 for all agreements existing as of April 28, 2019. We elected the "comparatives under Accounting Standards Codification ("ASC") 840 option" as a transitional method, which allows us to initially apply the new lease requirements at the effective date. Comparative periods were not adjusted and will continue to be reported in accordance with prior lease guidance under ASC 840. We elected the package of practical expedients, which permits us not to reassess our prior conclusions about lease identification, lease classification and initial direct costs. In addition, we have elected the short-term lease recognition whereby we will not recognize operating leases related assets or liabilities for leases with a lease term of less than one year. We have also elected the practical expedient to not separate lease and non-lease components in the lease payments for all asset classes. This adoption did not have an impact on our condensed consolidated statements of operations, shareholders' equity and cash flows, and there was no adjustment to retained earnings. As of April 28, 2019, we recognized a right of use asset for operating leases of $11,101 and a current and non-current lease liability for operating leases of $2,745 and $8,356, respectively. The right of use operating assets are included in the "Investment in affiliates and other assets" line item, the current lease liabilities are included in the "Accrued expenses" line item, and the non-current lease liabilities are included in the "Other long-term obligations" line item in our condensed consolidated balance sheet. See "Note 12. Leases" for more information.

Accounting Standards Not Yet Adopted

In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350), which simplifies the subsequent measurement of goodwill by removing the second step of the two-step impairment test. The amendment requires an entity to perform its annual or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. A goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 is effective for interim and annual periods beginning after December 15, 2019 and will require adoption on a prospective basis. We are currently evaluating the effect that adopting ASU 2017-04 will have on our condensed consolidated financial statements and related disclosures.

In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments, which provides guidance regarding the measurement and recognition of credit impairment for certain financial assets. ASU 2016-13 is effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted, and will require adoption on a modified retrospective basis. We are currently evaluating the effect that adopting ASU 2016-13, including all subsequent amendments and improvements to ASC Topic 326 issued by FASB, will have on our condensed consolidated financial statements and related disclosures.