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Investments - Unrealized Gains and Losses and Fair Value (Details) - USD ($) $ in Thousands	Jul. 24, 2021	Apr. 24, 2021
Summary of investments
Gross Unrealized  Gains	$ 3,708	$ 3,493
Gross Unrealized  Losses	(29)	(34)
Fair Value	55,650	55,404
Equity securities
Summary of investments
Gross Unrealized  Gains	2,981	2,798
Gross Unrealized  Losses	(5)	(5)
Fair Value	15,025	14,954
Fixed income
Summary of investments
Gross Unrealized  Gains	175	136
Gross Unrealized  Losses	(24)	(29)
Fair Value	35,867	35,631
Other
Summary of investments
Gross Unrealized  Gains	552	559
Gross Unrealized  Losses	0	0
Fair Value	$ 4,758	$ 4,819

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- Definition

Cumulative amount of gross unrealized gain on investments.

+ References

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- Definition

Cumulative amount of gross unrealized loss on investments.

+ References

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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