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Fair Value Measurements (Tables) | 6 Months Ended
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Jan. 27, 2024
Fair Value Disclosures [Abstract] |
Schedule of Short-term and Long-term Investments Accounted for as Available-for-sale Measured at Fair Value on Recurring Basis | Our cash equivalents and investments accounted for as available-for-sale securities that were measured at fair value on a recurring basis as of January 27, 2024 and July 29, 2023 were as follows:
|  | January 27, 2024 |  | July 29, 2023
(in thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 127,499 |  |  | $ | — |  |  | $ | — |  |  | $ | 127,499 |  |  | $ | 80,251 |  |  | $ | — |  |  | $ | — |  |  | $ | 80,251 |
Investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | 272 |  |  | — |  |  | — |  |  | 272 |  |  | 7,226 |  |  | — |  |  | — |  |  | 7,226 |
Corporate bonds |  | — |  |  | 2,049 |  |  | — |  |  | 2,049 |  |  | — |  |  | 10,935 |  |  | — |  |  | 10,935 |
Total |  | $ | 127,771 |  |  | $ | 2,049 |  |  | $ | — |  |  | $ | 129,820 |  |  | $ | 87,477 |  |  | $ | 10,935 |  |  | $ | — |  |  | $ | 98,412 |
Schedule of Amortized Cost, Gross Unrealized Gains (Losses) and Fair Value of Available-for-sale Investments | The following table sets forth the amortized cost, gross unrealized losses, and fair values of our investments accounted for as available-for-sale securities as of January 27, 2024 and July 29, 2023:
|  | January 27, 2024 |  | July 29, 2023
(in thousands) |  | Amortized Cost |  |  |  | Gross Unrealized Losses |  | Fair Value |  | Amortized Cost |  |  |  | Gross Unrealized Losses |  | Fair Value
Investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 272 |  |  |  |  | $ | — |  |  | $ | 272 |  |  | $ | 7,266 |  |  |  |  | $ | (40) |  |  | $ | 7,226 |
Corporate bonds |  | 2,051 |  |  |  |  | (2) |  |  | 2,049 |  |  | 11,069 |  |  |  |  | (134) |  |  | 10,935 |
Total |  | $ | 2,323 |  |  |  |  | $ | (2) |  |  | $ | 2,321 |  |  | $ | 18,335 |  |  |  |  | $ | (174) |  |  | $ | 18,161 |
Schedule of Unrealized Loss on Investments | The fair value and gross unrealized losses for those investments that were in a continuous unrealized loss position as of January 27, 2024 were as follows:
|  | Less Than 12 Months |  | More Than 12 Months |  | Total
(in thousands) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Investments: |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | — |  |  | — |  |  | 2,049 |  |  | (2) |  |  | 2,049 |  |  | (2) |
Total |  | $ | — |  |  | $ | — |  |  | $ | 2,049 |  |  | $ | (2) |  |  | $ | 2,049 |  |  | $ | (2) |
The fair value and gross unrealized losses for those investments that were in a continuous unrealized loss position as of July 29, 2023 were as follows:
|  | Less Than 12 Months |  | More Than 12 Months |  | Total
(in thousands) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Investments: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 265 |  |  | $ | (1) |  |  | $ | 6,961 |  |  | $ | (39) |  |  | $ | 7,226 |  |  | $ | (40) |
Corporate bonds |  | — |  |  | — |  |  | 10,935 |  |  | (134) |  |  | 10,935 |  |  | (134) |
Total |  | $ | 265 |  |  | $ | (1) |  |  | $ | 17,896 |  |  | $ | (173) |  |  | $ | 18,161 |  |  | $ | (174) |
Schedule of Fair Value of Available-for-sale Securities By Contractual Maturity | The fair values of available-for-sale securities by contractual maturity as of January 27, 2024 were as follows:
|  | January 27, 2024
(in thousands) |  | One Year or Less |  | Over One Year Through Five Years |  | Over Five Years |  | Total
Investments: |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 272 |  |  | $ | — |  |  | $ | — |  |  | $ | 272 |
Corporate bonds |  | 2,049 |  |  | — |  |  | — |  |  | 2,049 |
Total |  | $ | 2,321 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,321 |

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