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Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Oct. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets |
| Weighted Average Life at 10/31/2019 |  | October 31, 2019 |  | 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 | 7.2 |  | $ | 9,293 |  |  | $ | (4,766 | ) |  | $ | — |  |  | $ | 4,527 |  |  | $ | 9,303 |  |  | $ | (4,292 | ) |  | $ | — |  |  | $ | 5,011 |
Customer relationships | 2.1 |  | 5,024 |  |  | (3,660 | ) |  | — |  |  | 1,364 |  |  | 5,024 |  |  | (3,147 | ) |  | — |  |  | 1,877 |
Patents | 4.8 |  | 2,440 |  |  | (1,215 | ) |  | — |  |  | 1,225 |  |  | 2,441 |  |  | (1,028 | ) |  | — |  |  | 1,413 |
Trade name | 6.6 |  | 894 |  |  | (60 | ) |  | — |  |  | 834 |  |  | 894 |  |  | (52 | ) |  | — |  |  | 842 |
Developed technology | 6.2 |  | 1,430 |  |  | (548 | ) |  | — |  |  | 882 |  |  | 1,430 |  |  | (441 | ) |  | — |  |  | 989 |
Other | 4.6 |  | 680 |  |  | (59 | ) |  | — |  |  | 621 |  |  | 385 |  |  | (22 | ) |  | — |  |  | 363 |
Amortizable intangible assets |  | $ | 19,761 |  |  | $ | (10,308 | ) |  | $ | — |  |  | $ | 9,453 |  |  | $ | 19,477 |  |  | $ | (8,982 | ) |  | $ | — |  |  | $ | 10,495 |
Future Estimated Amortization Expense Related to Amortizable Intangible Assets | As of October 31, 2019, future estimated amortization expense related to amortizable intangible assets was estimated to be (in thousands):
For fiscal years ending January 31 |
2020 | $ | 498 |
2021 | 1,762 |
2022 | 1,242 |
2023 | 1,138 |
2024 | 934 |
Thereafter | 3,879 |
Total | $ | 9,453 |

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