Composition of certain financial statement captions - Schedule of intangible assets (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Jan. 31, 2021 |
Jan. 31, 2020 |
|
| Finite-Lived Intangible Assets [Line Items] | ||
| Intangible assets, grossing carrying value | $ 3,250 | $ 1,470 |
| Less accumulated amortization | (525) | (271) |
| Net carrying value | $ 2,725 | 1,199 |
| Acquired technology | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Useful life (in years) | 5 years | |
| Intangible assets, grossing carrying value | $ 1,410 | 490 |
| Customer relationship | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Useful life (in years) | 10 years | |
| Intangible assets, grossing carrying value | $ 1,840 | $ 980 |