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Investments (Tables) | 6 Months Ended
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Oct. 28, 2017
Investments |
Summary of investments |
(Unaudited, amounts in thousands) |  | 10/28/17 |  | 4/29/17 |
Short-term investments: |  |  |  |  |
Available-for-sale investments |  | $ | 11,966 |  | $ | 15,040 |
Trading securities |  | 17 |  | 6 |
Held-to-maturity investments |  | 3,171 |  | 1,867 |
Total short-term investments |  | 15,154 |  | 16,913 |
Long-term investments: |  |  |  |  |
Available-for-sale investments |  | 34,280 |  | 31,264 |
Cost basis investments |  | 10,954 |  | 5,500 |
Total long-term investments |  | 45,234 |  | 36,764 |
Total investments |  | $ | 60,388 |  | $ | 53,677 |
Investments to enhance returns on cash |  | $ | 35,334 |  | $ | 33,087 |
Investments to fund compensation/retirement plans |  | $ | 14,100 |  | $ | 13,690 |
Other investments |  | $ | 10,954 |  | $ | 6,900 |
Summary of unrealized gains, unrealized losses, and fair value by investment type | At October 28, 2017
(Unaudited, amounts in thousands) |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |
Equity securities |  | $ | 2,303 |  | $ | (46 | ) | $ | 19,079 |
Fixed income |  | 55 |  | (115 | ) | 37,236 |
Mutual funds |  | — |  | — |  | 17 |
Other |  | 64 |  | — |  | 4,056 |
Total securities |  | $ | 2,422 |  | $ | (161 | ) | $ | 60,388 |
At April 29, 2017 |  |  |  |  |  |  |
(Unaudited, 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 |
Total securities |  | $ | 2,526 |  | $ | (163 | ) | $ | 53,677 |
Summary of sales of available-for-sale securities |
|  | Quarter Ended |  | Six Months Ended |
(Unaudited, amounts in thousands) |  | 10/28/17 |  | 10/29/16 |  | 10/28/17 |  | 10/29/16 |
Proceeds from sales |  | $ | 5,672 |  | $ | 6,087 |  | $ | 11,529 |  | $ | 9,757 |
Gross realized gains |  | 16 |  | 16 |  | 418 |  | 47 |
Gross realized losses |  | (7 | ) | (2 | ) | (228 | ) | (38 | )

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