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Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Apr. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets |
| Weighted Average Life at 4/30/2021 |  | April 30, 2021 |  | January 31, 2021
Gross Carrying Amount |  | Accumulated Amortization |  | Impairment |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Impairment |  | Net Carrying Amount
Goodwill |  |  | $ | 7,060 |  |  | $ | — |  |  | $ | (7,060) |  |  | $ | — |  |  | $ | 7,060 |  |  | $ | — |  |  | $ | (7,060) |  |  | $ | — |
Proprietary rights | 7.0 |  | $ | 7,784 |  |  | $ | (3,807) |  |  | $ | — |  |  | $ | 3,977 |  |  | $ | 7,781 |  |  | $ | (3,688) |  |  | $ | — |  |  | $ | 4,093 |
Customer relationships | 0.6 |  | 5,024 |  |  | (4,677) |  |  | — |  |  | 347 |  |  | 5,024 |  |  | (4,513) |  |  | — |  |  | 511 |
Patents | 3.3 |  | 2,440 |  |  | (1,590) |  |  | — |  |  | 850 |  |  | 2,440 |  |  | (1,528) |  |  | — |  |  | 912 |
Trade name | 5.1 |  | 894 |  |  | (77) |  |  | (760) |  |  | 57 |  |  | 894 |  |  | (74) |  |  | (760) |  |  | 60 |
Developed technology | 4.7 |  | 1,430 |  |  | (762) |  |  | — |  |  | 668 |  |  | 1,430 |  |  | (727) |  |  | — |  |  | 703 |
Other | 3.1 |  | 684 |  |  | (246) |  |  | — |  |  | 438 |  |  | 684 |  |  | (213) |  |  | — |  |  | 471 |
Amortizable intangible assets |  | $ | 18,256 |  |  | $ | (11,159) |  |  | $ | (760) |  |  | $ | 6,337 |  |  | $ | 18,253 |  |  | $ | (10,743) |  |  | $ | (760) |  |  | $ | 6,750 |
Future Estimated Amortization Expense Related to Amortizable Intangible Assets | As of April 30, 2021, future estimated amortization expense related to amortizable intangible assets was estimated to be (in thousands):
For fiscal years ending January 31 |
2022 | $ | 896 |
2023 | 1,125 |
2024 | 989 |
2025 | 795 |
2026 | 658 |
Thereafter | 1,874 |
Total | $ | 6,337 |

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