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Investments - Unrealized Gains and Losses and Fair Value (Details) - USD ($) $ in Thousands | Jul. 25, 2020 | Apr. 25, 2020
--- | --- | ---
Summary of investments |  |
Gross Unrealized Gains | $ 2,248 | $ 1,651
Gross Unrealized Losses | (26) | (6,446)
Fair Value | 37,858 | 48,022
Equity securities |  |
Summary of investments |  |
Gross Unrealized Gains | 1,575 | 1,011
Gross Unrealized Losses | (19) | (6,390)
Fair Value | 14,463 | 12,692
Fixed income |  |
Summary of investments |  |
Gross Unrealized Gains | 274 | 268
Gross Unrealized Losses | (7) | (56)
Fair Value | 19,058 | 30,213
Other |  |
Summary of investments |  |
Gross Unrealized Gains | 399 | 372
Gross Unrealized Losses | 0 | 0
Fair Value | $ 4,337 | $ 5,117

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