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Investments - Unrealized Gains and Losses and Fair Value (Details) - USD ($) $ in Thousands	Jan. 26, 2019	Apr. 28, 2018
Summary of investments
Gross Unrealized Gains	$ 1,661	$ 2,243
Gross Unrealized Losses	(271)	(457)
Fair Value	57,669	59,354
Equity securities
Summary of investments
Gross Unrealized Gains	1,358	2,142
Gross Unrealized Losses	(27)	(39)
Fair Value	18,314	18,765
Fixed income
Summary of investments
Gross Unrealized Gains	44	29
Gross Unrealized Losses	(231)	(418)
Fair Value	33,702	36,312
Other
Summary of investments
Gross Unrealized Gains	259	72
Gross Unrealized Losses	(13)
Fair Value	$ 5,653	$ 4,277

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Cumulative amount of gross unrealized gain on investments.

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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

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