Revenue and contract costs - Narrative (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jul. 31, 2024 |
Jul. 31, 2023 |
Jul. 31, 2024 |
Jul. 31, 2023 |
|
| Revenue from External Customer [Line Items] | ||||
| Capitalized contract cost, amortization | $ 192,000 | $ 280,000 | $ 384,000 | $ 620,000 |
| Capitalized contract cost, impairment loss | $ 0 | 0 | ||
| Minimum | ||||
| Revenue from External Customer [Line Items] | ||||
| Capitalized contract cost, amortization period (in years) | 3 years | 3 years | ||
| Maximum | ||||
| Revenue from External Customer [Line Items] | ||||
| Capitalized contract cost, amortization period (in years) | 5 years | 5 years | ||
| Subscription and Related Services | ||||
| Revenue from External Customer [Line Items] | ||||
| Lease income | $ 2,324,000 | $ 2,603,000 | $ 4,712,000 | $ 5,265,000 |