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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Jan. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | Goodwill and other intangible assets from continuing operations consisted of the following:
| Weighted Average Life at 1/31/20 |  | January 31, 2021 |  | January 31, 2020
| Gross Carrying Amount |  | Accumulated Amortization |  | Impairment |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Impairment |  | Net Carrying Amount
|  |  | (in thousands) |  | (in thousands)
Goodwill |  |  | $ | 7,060 |  |  | $ | — |  |  | $ | (7,060) |  |  | $ | — |  |  | $ | 7,060 |  |  | $ | — |  |  | $ | (4,529) |  |  | $ | 2,531 |
Proprietary rights | 7.2 |  | $ | 7,781 |  |  | $ | (3,688) |  |  | — |  |  | 4,093 |  |  | $ | 9,247 |  |  | $ | (4,950) |  |  | — |  |  | 4,297 |
Customer relationships | 0.8 |  | 5,024 |  |  | (4,513) |  |  | — |  |  | 511 |  |  | 5,024 |  |  | (3,831) |  |  | — |  |  | 1,193 |
Patents | 3.6 |  | 2,440 |  |  | (1,528) |  |  | — |  |  | 912 |  |  | 2,440 |  |  | (1,277) |  |  | — |  |  | 1,163 |
Trade name | 5.3 |  | 894 |  |  | (74) |  |  | (760) |  |  | 60 |  |  | 894 |  |  | (63) |  |  | (760) |  |  | 71 |
Developed technology | 4.9 |  | 1,430 |  |  | (727) |  |  | — |  |  | 703 |  |  | 1,430 |  |  | (584) |  |  | — |  |  | 846 |
Other | 3.4 |  | 684 |  |  | (213) |  |  | — |  |  | 471 |  |  | 653 |  |  | (87) |  |  | — |  |  | 566 |
Amortizable intangible assets |  | $ | 18,253 |  |  | $ | (10,743) |  |  | $ | (760) |  |  | $ | 6,750 |  |  | $ | 19,688 |  |  | $ | (10,792) |  |  | $ | (760) |  |  | $ | 8,136 |
Future Estimated Amortization Expense Related to Amortizable Intangible Assets | As of January 31, 2021, future estimated amortization expense related to amortizable intangible assets is estimated to be (in thousands):
For fiscal year ending January 31: |
2022 | $ | 1,266 |
2023 | 1,125 |
2024 | 989 |
2025 | 828 |
2026 | 658 |
Thereafter | 1,884 |
Total | $ | 6,750 |

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