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Other Assets | 9 Months Ended
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Oct. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Other Assets | Other Assets Other assets consisted of the following (in thousands):
| October 31, 2021 |  | January 31, 2021
Non-marketable equity and other investments (1) | $ | 194,597 |  |  | $ | 85,868 |
Prepayments for goods and services | 29,174 |  |  | 19,824 |
Technology patents and other intangible assets, net | 15,518 |  |  | 17,766 |
Net deferred tax assets | 9,690 |  |  | 9,985 |
Deposits | 6,589 |  |  | 6,218 |
Derivative assets | 13,034 |  |  | 173 |
Equity investments accounted for under the equity method | — |  |  | 48,222 |
Other | 906 |  |  | 1,701 |
Total other assets | $ | 269,508 |  |  | $ | 189,757 |
(1)Included in non-marketable equity and other investments are investments in loan receivables of privately held companies, which are carried at amortized cost. The carrying values of these loan receivables were $25 million and $13 million as of October 31, 2021, and January 31, 2021, respectively. The allowance for credit losses on loan receivables was immaterial for the periods presented. Technology patents and other intangible assets with estimable useful lives are amortized on a straight-line basis. As of October 31, 2021, the future estimated amortization expense was as follows (in thousands):
Fiscal Period: |
Remainder of 2022 | $ | 712 |
2023 | 2,688 |
2024 | 2,380 |
2025 | 1,900 |
2026 | 1,636 |
Thereafter | 6,202 |
Total | $ | 15,518 |

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