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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Jan. 31, 2021
Accounting Policies [Abstract] |
Summary Of Property, Plant and Equipment Useful Lives | Property and equipment, including costs incurred to bring to the location and condition necessary for intended use, are recorded at cost and depreciated over their estimated useful lives using the straight-line method and the following estimated useful lives:
| Estimated Useful Life
Computer and network equipment | 3 years
Software, including capitalized software development costs | 3 - 5 years
Furniture and office equipment | 3 - 4 years
Leasehold improvements | Lesser of lease term and 10 years
Summary Of Finite-Lived Intangible Assets Estimated Useful Lives | The estimated useful lives of intangible assets, estimated based on our expected period of benefit, are as follows:
| Estimated Useful Life
Existing technology | 3 - 5 years
Customer contracts & related relationships | 5 - 10 years
Other(1) | 1 - 5 years
(1)Includes certifications, maintenance contracts and related relationships, subscription backlog and tradenames and trademarks
Schedule of Cash, Cash Equivalents, and Restricted Cash | The following table illustrates the reconciliation of cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows as of January 31, 2021 and 2020:
| January 31,
(in thousands) | 2021 |  | 2020
Cash and cash equivalents | $ | 566,055 |  |  | $ | 241,203 |
Restricted cash included in prepaid expense and other current assets | — |  |  | 280 |
Restricted cash included in other assets - noncurrent | 281 |  |  | — |
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows | $ | 566,336 |  |  | $ | 241,483 |

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