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Investments - Components (Details) - USD ($) $ in Thousands | Apr. 30, 2016 | Apr. 25, 2015
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Investments |  |
Total available-for-sale and trading investments | $ 46,976 | $ 61,195
Investments to enhance returns on cash |  |
Investments |  |
Total available-for-sale and trading investments | 33,583 | 45,490
Investments to fund compensation/retirement plans |  |
Investments |  |
Total available-for-sale and trading investments | 13,393 | 15,705
Other current assets |  |
Investments |  |
Available-for-sale investments | 13,491 | 16,763
Trading securities |  | 1,127
Held-to-maturity investments | 1,826 |
Total available-for-sale and trading investments | 15,317 | 17,890
Other long-term assets |  |
Investments |  |
Available-for-sale investments | $ 31,659 | $ 43,305

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