Derivative Financial Instruments - Statements of Operations (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2025 |
Jul. 31, 2026 |
Jul. 31, 2025 |
|
| Derivative Financial Instruments [Abstract] | ||||
| Net sales | $ 62 | $ 201 | $ (1,513) | $ 218 |
| Cost of sales | $ (119) | $ 317 | $ (478) | $ 2,285 |