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SHORT-TERM AND LONG-TERM INVESTMENTS (Tables) | 12 Months Ended
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Oct. 30, 2021
Investments, Debt and Equity Securities [Abstract] |
Short-term and long-term investments | As of the dates indicated, investments are comprised of the following (in thousands):
| October 30, 2021
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
U.S. government obligations: |  |  |  |  |  |  |
Included in short-term investments | $ | 181,488 |  |  | $ | 5 |  |  | $ | (10) |  |  | $ | 181,483 |
Included in long-term investments | 70,225 |  |  | — |  |  | (187) |  |  | 70,038 |
| $ | 251,713 |  |  | $ | 5 |  |  | $ | (197) |  |  | $ | 251,521 |
| October 31, 2020
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
U.S. government obligations: |  |  |  |  |  |  |
Included in short-term investments | $ | 150,559 |  |  | $ | 109 |  |  | $ | (1) |  |  | $ | 150,667 |
Included in long-term investments | 82,252 |  |  | — |  |  | (26) |  |  | 82,226 |
| $ | 232,811 |  |  | $ | 109 |  |  | $ | (27) |  |  | $ | 232,893 |
Legal maturities of debt investments | The following table summarizes the legal maturities of debt investments at October 30, 2021 (in thousands):
| October 30, 2021
| Amortized Cost |  | Estimated Fair Value
Less than one year | $ | 181,488 |  |  | $ | 181,483 |
Due in 1-2 years | 70,225 |  |  | 70,038 |
| $ | 251,713 |  |  | $ | 251,521 |

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