Subsequent Events	12 Months Ended
Apr. 24, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsDuring the first quarter of fiscal 2022, we entered into an agreement to sell a portion of one of our investments, which we expect to close in the first quarter of fiscal 2022. We expect to receive cash proceeds of approximately $54,000, and to record a pre-tax gain of approximately $28,000 in other income, net in our consolidated statements of operations and other comprehensive income (loss) as a result of this sale. Also related to this transaction, we expect to record a non-cash gain in the first quarter of fiscal 2022 related to the remaining portion of this investment.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

Name:	us-gaap_SubsequentEventsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration