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Fair Value Measurements (Tables) | 6 Months Ended
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Jan. 31, 2020
Fair Value Disclosures [Abstract] |
Schedule of Fair Value, Assets Measured on Recurring Basis | Assets that are measured at fair value on a recurring basis consisted of the following as of January 31, 2020:
|  |  | Level I |  | Level II |  | Level III
| Fair Value |  | Quoted Prices in Active Markets for Identical Assets |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs
Cash equivalents: | (in thousands) |  |  |  |  |  |
Money market funds | $ | 42,374 |  |  | $ | 42,374 |  |  | $ | — |  |  | $ | — |
U.S. government agency securities | 1,500 |  |  | — |  |  | 1,500 |  |  | — |
Total | $ | 43,874 |  |  | $ | 42,374 |  |  | $ | 1,500 |  |  | $ | — |
Short-term investments: |  |  |  |  |  |  |
U.S. treasury securities | $ | 72,168 |  |  | $ | — |  |  | $ | 72,168 |  |  | $ | — |
U.S. government agency securities | 112,980 |  |  | — |  |  | 112,980 |  |  | — |
Corporate debt securities | 123,232 |  |  | — |  |  | 123,232 |  |  | — |
Total | $ | 308,380 |  |  | $ | — |  |  | $ | 308,380 |  |  | $ | — |
Total cash equivalents and short-term investments | $ | 352,254 |  |  | $ | 42,374 |  |  | $ | 309,880 |  |  | $ | — |
Assets that are measured at fair value on a recurring basis consisted of the following as of July 31, 2019:
|  |  | Level I |  | Level II |  | Level III
| Fair Value |  | Quoted Prices in Active Markets for Identical Assets |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs
Cash equivalents: | (in thousands) |  |  |  |  |  |
Money market funds | $ | 55,036 |  |  | $ | 55,036 |  |  | $ | — |  |  | $ | — |
Short-term investments: |  |  |  |  |  |  |
U.S. treasury securities | $ | 125,281 |  |  | $ | — |  |  | $ | 125,281 |  |  | $ | — |
U.S. government agency securities | 64,646 |  |  | — |  |  | 64,646 |  |  | — |
Corporate debt securities | 96,235 |  |  | — |  |  | 96,235 |  |  | — |
Total | $ | 286,162 |  |  | $ | — |  |  | $ | 286,162 |  |  | $ | — |
Total cash equivalents and short-term investments | $ | 341,198 |  |  | $ | 55,036 |  |  | $ | 286,162 |  |  | $ | — |

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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=117815213&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=117815213&loc=d3e19207-110258 + Details
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