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Investments - Components (Details) - USD ($) $ in Thousands | Jul. 25, 2020 | Apr. 25, 2020
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Investments |  |
Total investments | $ 37,858 | $ 48,022
Investments to enhance returns on cash |  |
Investments |  |
Total investments | 16,494 | 28,622
Investments to fund compensation/retirement plans |  |
Investments |  |
Total investments | 13,785 | 12,921
Other investments |  |
Investments |  |
Total investments | 7,579 | 6,479
Short-term investments |  |
Investments |  |
Marketable securities | 9,340 | 18,634
Held-to-maturity investments | 2,476 | 3,337
Total investments | 11,816 | 21,971
Long-term investments |  |
Investments |  |
Marketable securities | 18,463 | 19,572
Cost basis investments | 7,579 | 6,479
Total investments | $ 26,042 | $ 26,051

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