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Short-Term and Long-Term Investments (Tables) | 12 Months Ended
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Oct. 31, 2020
Investments, Debt and Equity Securities [Abstract] |
Short-term and long-term investments | As of October 31, 2020, investments are comprised of the following (in thousands):
| 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 |
As of November 2, 2019, investments are comprised of the following (in thousands):
| November 2, 2019
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
U.S. government obligations: |  |  |  |  |  |  |
Included in short-term investments | $ | 109,715 |  |  | $ | 225 |  |  | $ | — |  |  | $ | 109,940 |
Included in long-term investments | 10,017 |  |  | — |  |  | (3) |  |  | 10,014 |
| $ | 119,732 |  |  | $ | 225 |  |  | $ | (3) |  |  | $ | 119,954 |
Legal maturities of debt investments | The following table summarizes the legal maturities of debt investments at October 31, 2020 (in thousands):
| October 31, 2020
| Amortized Cost |  | Estimated Fair Value
Less than one year | $ | 150,559 |  |  | $ | 150,667 |
Due in 1-2 years | 82,252 |  |  | 82,226 |
| $ | 232,811 |  |  | $ | 232,893 |

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