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Investments - Unrealized Gains and Losses and Fair Value (Details) - USD ($) $ in Thousands	Apr. 28, 2018	Apr. 29, 2017
Summary of investments
Gross Unrealized Gains	$ 2,243	$ 2,526
Gross Unrealized Losses	(457)	(163)
Fair Value	59,354	53,677
Equity securities
Summary of investments
Gross Unrealized Gains	2,142	1,796
Gross Unrealized Losses	(39)	(83)
Fair Value	18,671	13,610
Fixed income
Summary of investments
Gross Unrealized Gains	29	729
Gross Unrealized Losses	(418)	(72)
Fair Value	36,312	37,580
Mutual funds
Summary of investments
Fair Value	94	6
Other
Summary of investments
Gross Unrealized Gains	72	1
Gross Unrealized Losses		(8)
Fair Value	$ 4,277	$ 2,481

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- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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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.

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