Equity Incentive Plans - Outstanding Common Stock Options and Related Activity (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Apr. 30, 2026 |
Jan. 31, 2026 |
|
| Shares Subject to Outstanding Options | ||
| Beginning balance of options outstanding (shares) | 35,285 | |
| Expired (shares) | (1,766) | |
| Ending balance of options outstanding (shares) | 33,519 | 35,285 |
| Weighted- Average Exercise Price per Share | ||
| Options outstanding, weighted average exercise price (in usd per share) | $ 27.68 | |
| Options expired, weighted average exercise price (in usd per share) | 27.60 | |
| Options outstanding, weighted average exercise price (in usd per share) | $ 27.68 | $ 27.68 |
| Additional disclosures | ||
| Options outstanding, weighted average remaining contractual term | 6 months | 8 months 12 days |
| Options outstanding, aggregate intrinsic value | $ 0 | $ 0 |