Revenue and contract costs - Narrative (Details) - USD ($) |
3 Months Ended | |||
|---|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2025 |
Jan. 31, 2025 |
Jan. 30, 2025 |
|
| Revenue from External Customer [Line Items] | ||||
| Capitalized contract cost, amortization | $ 116,000 | $ 110,000 | ||
| Deferred contract acquisition costs (in years) | 3 years | 5 years | ||
| Capitalized contract cost, impairment loss | $ 0 | 0 | ||
| Minimum | ||||
| Revenue from External Customer [Line Items] | ||||
| Capitalized contract cost, amortization period (in years) | 3 years | |||
| Maximum | ||||
| Revenue from External Customer [Line Items] | ||||
| Capitalized contract cost, amortization period (in years) | 5 years | |||
| Subscription and Related Services | ||||
| Revenue from External Customer [Line Items] | ||||
| Lease income | $ 2,074,000 | $ 2,419,000 | ||