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Investments (Tables) | 12 Months Ended
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Apr. 29, 2017
Investments |
Summary of investments |
(Amounts in thousands) |  | 4/29/2017 |  | 4/30/2016 |
Short-term investments: |  |  |  |  |  |  |
Available-for-sale investments |  | $ | 15,040 |  | $ | 13,491 |
Trading securities |  |  | 6 |  |  | — |
Held-to-maturity investments |  |  | 1,867 |  |  | 1,826 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total short-term investments |  |  | 16,913 |  |  | 15,317 |
Long-term investments: |  |  |  |  |  |  |
Available-for-sale investments |  |  | 31,264 |  |  | 31,659 |
Cost basis investment |  |  | 5,500 |  |  | — |
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Total long-term investments |  |  | 36,764 |  |  | 31,659 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total investments |  | $ | 53,677 |  | $ | 46,976 |
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Investments to enhance returns on cash |  | $ | 33,087 |  | $ | 33,583 |
Investments to fund compensation/retirement plans |  | $ | 13,690 |  | $ | 13,393 |
Other investments |  | $ | 6,900 |  | $ | — |
Summary of unrealized gains, unrealized losses, and fair value by investment type | Fiscal 2017
(Amounts in thousands) |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |
Equity securities |  | $ | 1,796 |  | $ | (83 | ) | $ | 13,610 |
Fixed income |  |  | 729 |  |  | (72 | ) |  | 37,580 |
Mutual funds |  |  | — |  |  | — |  |  | 6 |
Other |  |  | 1 |  |  | (8 | ) |  | 2,481 |
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Total securities |  | $ | 2,526 |  | $ | (163 | ) | $ | 53,677 |
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Fiscal 2016
(Amounts in thousands) |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |
Equity securities |  | $ | 1,231 |  | $ | (135 | ) | $ | 8,150 |
Fixed income |  |  | 176 |  |  | (9 | ) |  | 36,527 |
Mutual funds |  |  | — |  |  | — |  |  | — |
Other |  |  | 1 |  |  | (21 | ) |  | 2,299 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total securities |  | $ | 1,408 |  | $ | (165 | ) | $ | 46,976 |
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Summary of sales of available-for-sale securities |
(Amounts in thousands) |  | 4/29/2017 |  | 4/30/2016 |  | 4/25/2015 |
Proceeds from sales |  | $ | 19,954 |  | $ | 28,721 |  | $ | 33,750 |
Gross realized gains |  |  | 926 |  |  | 997 |  |  | 285 |
Gross realized losses |  |  | (455 | ) |  | (561 | ) |  | (74 | )

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