Composition of certain financial statement captions - Schedule of intangible assets (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Jan. 31, 2023 |
Jan. 31, 2022 |
|
| Finite-Lived Intangible Assets [Line Items] | ||
| Total intangible assets, gross carrying value | $ 13,950 | $ 13,950 |
| Less accumulated amortization | (2,549) | (1,178) |
| Net carrying value | $ 11,401 | 12,772 |
| Acquired technology | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Useful life (in years) | 5 years | |
| Total intangible assets, gross carrying value | $ 1,410 | 1,410 |
| Customer relationship | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Total intangible assets, gross carrying value | $ 6,340 | 6,340 |
| Customer relationship | Minimum | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Useful life (in years) | 7 years | |
| Customer relationship | Maximum | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Useful life (in years) | 10 years | |
| License | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Useful life (in years) | 15 years | |
| Total intangible assets, gross carrying value | $ 6,200 | $ 6,200 |