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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Jan. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets |
| Weighted Average Life at 1/31/20 |  | January 31, 2020 |  | January 31, 2019
| 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 |  |  | $ | — |  |  | $ | (4,529 | ) |  | $ | 2,531 |  |  | $ | 7,060 |  |  | $ | — |  |  | $ | (4,529 | ) |  | $ | 2,531 |
Proprietary rights | 7.0 |  | $ | 9,293 |  |  | $ | (4,971 | ) |  | — |  |  | 4,322 |  |  | $ | 9,303 |  |  | $ | (4,292 | ) |  | — |  |  | 5,011 |
Customer relationships | 1.8 |  | 5,024 |  |  | (3,831 | ) |  | — |  |  | 1,193 |  |  | 5,024 |  |  | (3,147 | ) |  | — |  |  | 1,877 |
Patents | 4.5 |  | 2,440 |  |  | (1,277 | ) |  | — |  |  | 1,163 |  |  | 2,441 |  |  | (1,028 | ) |  | — |  |  | 1,413 |
Trade name | 6.3 |  | 894 |  |  | (63 | ) |  | (760 | ) |  | 71 |  |  | 894 |  |  | (52 | ) |  | — |  |  | 842 |
Developed technology | 5.9 |  | 1,430 |  |  | (584 | ) |  | — |  |  | 846 |  |  | 1,430 |  |  | (441 | ) |  | — |  |  | 989 |
Other | 4.3 |  | 653 |  |  | (87 | ) |  | — |  |  | 566 |  |  | 385 |  |  | (22 | ) |  | — |  |  | 363 |
Amortizable intangible assets |  | $ | 19,734 |  |  | $ | (10,813 | ) |  | $ | (760 | ) |  | $ | 8,161 |  |  | $ | 19,477 |  |  | $ | (8,982 | ) |  | $ | — |  |  | $ | 10,495 |
Future Estimated Amortization Expense Related to Amortizable Intangible Assets | As of January 31, 2020, future estimated amortization expense related to amortizable intangible assets is estimated to be (in thousands):
For fiscal years ending January 31: |
2021 | $ | 1,733 |
2022 | 1,256 |
2023 | 1,088 |
2024 | 976 |
2025 | 746 |
Thereafter | 2,362 |
Total | $ | 8,161 |

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