Revenue and contract costs - Narrative (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Oct. 31, 2025 |
Oct. 31, 2024 |
Oct. 31, 2025 |
Oct. 31, 2024 |
Jan. 31, 2025 |
Jan. 30, 2025 |
|
| Revenue from External Customer [Line Items] | ||||||
| Capitalized contract cost, amortization period (in years) | 3 years | 3 years | ||||
| Capitalized contract cost, amortization | $ 111,000 | $ 1,322,000 | $ 463,000 | $ 1,706,000 | ||
| Deferred contract acquisition costs (in years) | 3 years | 5 years | ||||
| Capitalized contract cost, impairment loss | 0 | 0 | 0 | 0 | ||
| Subscription and Related Services | ||||||
| Revenue from External Customer [Line Items] | ||||||
| Lease income | $ 1,764,000 | $ 2,395,000 | $ 6,015,000 | $ 7,107,000 | ||