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Fair Value Measurements (Tables) | 9 Months Ended
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Apr. 30, 2022
Fair Value Disclosures [Abstract] |
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 gains, gross unrealized losses and fair values of our short-term and long-term investments accounted for as available-for-sale securities as of April 30, 2022, and July 31, 2021:
|  | April 30, 2022 |  | July 31, 2021
(in thousands) |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Financial Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 54,889 |  |  | $ | — |  |  | $ | (905) |  |  | $ | 53,984 |  |  | $ | 42,009 |  |  | $ | 35 |  |  | $ | — |  |  | $ | 42,044 |
Certificates of deposit |  | 700 |  |  | — |  |  | — |  |  | 700 |  |  | 1,500 |  |  | — |  |  | — |  |  | 1,500 |
Commercial paper |  | 2,978 |  |  | — |  |  | — |  |  | 2,978 |  |  | 10,192 |  |  | — |  |  | — |  |  | 10,192 |
Asset-backed securities |  | 7,505 |  |  | 1 |  |  | (24) |  |  | 7,482 |  |  | 10,393 |  |  | 18 |  |  | (9) |  |  | 10,402 |
Corporate bonds |  | 81,089 |  |  | — |  |  | (1,185) |  |  | 79,904 |  |  | 96,347 |  |  | 103 |  |  | (7) |  |  | 96,443 |
Total |  | $ | 147,161 |  |  | $ | 1 |  |  | $ | (2,114) |  |  | $ | 145,048 |  |  | $ | 160,441 |  |  | $ | 156 |  |  | $ | (16) |  |  | $ | 160,581 |
Schedule of Fair Value of Available-for-sale Securities By Contractual Maturity | The following table sets forth the fair value of available-for-sale securities by contractual maturity as of April 30, 2022, and July 31, 2021:
|  | April 30, 2022 |  | July 31, 2021
(in thousands) |  | One Year or Less |  | Over One Year Through Five Years |  | Over Five Years |  | Total |  | One Year or Less |  | Over One Year Through Five Years |  | Over Five Years |  | Total
Financial Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 33,894 |  |  | $ | 20,090 |  |  | $ | — |  |  | $ | 53,984 |  |  | $ | 41,633 |  |  | $ | 411 |  |  | $ | — |  |  | $ | 42,044 |
Certificates of deposit |  | 700 |  |  | — |  |  | — |  |  | 700 |  |  | 1,500 |  |  | — |  |  | — |  |  | 1,500 |
Commercial paper |  | 2,978 |  |  | — |  |  | — |  |  | 2,978 |  |  | 10,192 |  |  | — |  |  | — |  |  | 10,192 |
Asset-backed securities |  | 3,006 |  |  | 4,476 |  |  | — |  |  | 7,482 |  |  | 29 |  |  | 10,373 |  |  | — |  |  | 10,402 |
Corporate bonds |  | 56,451 |  |  | 23,453 |  |  | — |  |  | 79,904 |  |  | 48,192 |  |  | 48,251 |  |  | — |  |  | 96,443 |
Total |  | $ | 97,029 |  |  | $ | 48,019 |  |  | $ | — |  |  | $ | 145,048 |  |  | $ | 101,546 |  |  | $ | 59,035 |  |  | $ | — |  |  | $ | 160,581 |
Schedule of Short-term and Long-term Investments Accounted for as Available-for-sale Measured at Fair Value on Recurring Basis | The following table sets forth our cash equivalents, and short-term and long-term investments accounted for as available-for-sale securities that were measured at fair value on a recurring basis based on the fair value hierarchy as of April 30, 2022, and July 31, 2021:
|  | April 30, 2022 |  | July 31, 2021
(in thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Financial Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 24,718 |  |  | $ | — |  |  | $ | — |  |  | $ | 24,718 |  |  | $ | 10,728 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,728 |
Investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | 53,984 |  |  | — |  |  | — |  |  | 53,984 |  |  | 42,044 |  |  | — |  |  | — |  |  | 42,044 |
Certificates of deposit |  | — |  |  | 700 |  |  | — |  |  | 700 |  |  | — |  |  | 1,500 |  |  | — |  |  | 1,500 |
Commercial paper |  | — |  |  | 2,978 |  |  | — |  |  | 2,978 |  |  | — |  |  | 10,192 |  |  | — |  |  | 10,192 |
Asset-backed securities |  | — |  |  | 7,482 |  |  | — |  |  | 7,482 |  |  | — |  |  | 10,402 |  |  | — |  |  | 10,402 |
Corporate bonds |  | — |  |  | 79,904 |  |  | — |  |  | 79,904 |  |  | — |  |  | 96,443 |  |  | — |  |  | 96,443 |
Total |  | $ | 78,702 |  |  | $ | 91,064 |  |  | $ | — |  |  | $ | 169,766 |  |  | $ | 52,772 |  |  | $ | 118,537 |  |  | $ | — |  |  | $ | 171,309 |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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