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Note 9 - Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Oct. 31, 2021
Notes Tables |
Schedule of Intangible Assets and Goodwill [Table Text Block] |
|  |  |  | October 31, 2021 |  |  | January 31, 2021 |
|  | Weighted |  | Gross |  |  |  |  |  |  |  |  |  |  | Net |  |  | Gross |  |  |  |  |  |  |  |  |  |  | Net |
|  | Average Life at |  | Carrying |  |  | Accumulated |  |  | Accumulated |  |  | Carrying |  |  | Carrying |  |  | Accumulated |  |  |  |  |  |  | Carrying |
|  | 10/31/2021 |  | Amount |  |  | Amortization |  |  | Impairment |  |  | Amount |  |  | Amount |  |  | Amortization |  |  | Impairment |  |  | Amount |
Goodwill |  |  |  | $ | 7,060 |  |  | $ | — |  |  | $ | (7,060 | ) |  | $ | — |  |  | $ | 7,060 |  |  | $ | — |  |  | $ | (7,060 | ) |  | $ | — |
Proprietary rights |  | 6.2 |  |  | 8,221 |  |  |  | (4,028 | ) |  |  | — |  |  |  | 4,193 |  |  |  | 7,781 |  |  |  | (3,688 | ) |  |  | — |  |  |  | 4,093 |
Customer relationships |  | 0.4 |  |  | 5,024 |  |  |  | (4,772 | ) |  |  | — |  |  |  | 252 |  |  |  | 5,024 |  |  |  | (4,513 | ) |  |  | — |  |  |  | 511 |
Patents |  | 2.9 |  |  | 2,440 |  |  |  | (1,715 | ) |  |  | — |  |  |  | 725 |  |  |  | 2,440 |  |  |  | (1,528 | ) |  |  | — |  |  |  | 912 |
Trade name |  | 4.6 |  |  | 894 |  |  |  | (83 | ) |  |  | (760 | ) |  |  | 51 |  |  |  | 894 |  |  |  | (74 | ) |  |  | (760 | ) |  |  | 60 |
Developed technology |  | 4.2 |  |  | 1,430 |  |  |  | (834 | ) |  |  | — |  |  |  | 596 |  |  |  | 1,430 |  |  |  | (727 | ) |  |  | — |  |  |  | 703 |
Other |  | 2.6 |  |  | 684 |  |  |  | (311 | ) |  |  | — |  |  |  | 373 |  |  |  | 684 |  |  |  | (213 | ) |  |  | — |  |  |  | 471 |
Amortizable intangible assets |  |  |  | $ | 18,693 |  |  | $ | (11,743 | ) |  | $ | (760 | ) |  | $ | 6,190 |  |  | $ | 18,253 |  |  | $ | (10,743 | ) |  | $ | (760 | ) |  | $ | 6,750 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
For fiscal years ending January 31 |  |  |  |
2022 |  | $ | 294 |
2023 |  |  | 1,167 |
2024 |  |  | 1,032 |
2025 |  |  | 837 |
2026 |  |  | 700 |
Thereafter |  |  | 2,160 |
Total |  | $ | 6,190 |

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