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Investments (Tables) | 12 Months Ended
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Apr. 30, 2016
Investments |
Summary of investments |
(Amounts in thousands) |  | 4/30/2016 |  | 4/25/2015 |
Short-term investments: |  |  |  |  |  |  |
Available-for-sale investments |  | $ | 13,491 |  | $ | 16,763 |
Trading securities |  |  | — |  |  | 1,127 |
Held-to-maturity investments |  |  | 1,826 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total short-term investments |  |  | 15,317 |  |  | 17,890 |
Long-term investments: |  |  |  |  |  |  |
Available-for-sale investments |  |  | 31,659 |  |  | 43,305 |
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Total available-for-sale and trading investments |  | $ | 46,976 |  | $ | 61,195 |
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Investments to enhance returns on cash |  | $ | 33,583 |  | $ | 45,490 |
Investments to fund compensation/retirement plans |  | $ | 13,393 |  | $ | 15,705 |
Summary of unrealized gain, unrealized losses, and fair value by investment type | 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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Fiscal 2015
(Amounts in thousands) |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |
Equity securities |  | $ | 2,014 |  | $ | (78 | ) | $ | 9,251 |
Fixed income |  |  | 224 |  |  | (14 | ) |  | 50,358 |
Mutual funds |  |  | — |  |  | — |  |  | 1,127 |
Other |  |  | 1 |  |  | (22 | ) |  | 459 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total securities |  | $ | 2,239 |  | $ | (114 | ) | $ | 61,195 |
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Summary of sales of available-for-sale securities |
(Amounts in thousands) |  | 4/30/2016 |  | 4/25/2015 |  | 4/26/2014 |
Proceeds from sales |  | $ | 28,721 |  | $ | 33,750 |  | $ | 34,557 |
Gross realized gains |  |  | 997 |  |  | 285 |  |  | 857 |
Gross realized losses |  |  | (561 | ) |  | (74 | ) |  | (559 | )

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