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Note 8 - Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Oct. 31, 2022 | Jan. 31, 2022
Amortizable intangible assets, gross carrying amount | $ 18,819 | $ 18,819
Amortizable intangible assets, accumulated amortization | (12,866) | (12,041)
Intangible assets, net | 5,193 | 6,018
Amortizable intangible assets, impairment | (760) | (760)
Proprietary Rights [Member] |  |
Amortizable intangible assets, gross carrying amount | 8,237 | 8,237
Amortizable intangible assets, accumulated amortization | (4,492) | (4,150)
Intangible assets, net | $ 3,745 | 4,087
Proprietary Rights [Member] | Weighted Average [Member] |  |
Weighted average life (Year) | 5 years 3 months 18 days |
Customer Relationships [Member] |  |
Amortizable intangible assets, gross carrying amount | $ 5,024 | 5,024
Amortizable intangible assets, accumulated amortization | (4,870) | (4,797)
Intangible assets, net | $ 154 | 227
Customer Relationships [Member] | Weighted Average [Member] |  |
Weighted average life (Year) | 2 months 12 days |
Patents [Member] |  |
Amortizable intangible assets, gross carrying amount | $ 2,540 | 2,540
Amortizable intangible assets, accumulated amortization | (1,965) | (1,778)
Intangible assets, net | $ 575 | 762
Patents [Member] | Weighted Average [Member] |  |
Weighted average life (Year) | 2 years 2 months 12 days |
Trade Names [Member] |  |
Amortizable intangible assets, gross carrying amount | $ 894 | 894
Amortizable intangible assets, accumulated amortization | (94) | (85)
Intangible assets, net | 40 | 49
Amortizable intangible assets, impairment | $ (760) | (760)
Trade Names [Member] | Weighted Average [Member] |  |
Weighted average life (Year) | 3 years 7 months 6 days |
Developed Technology Rights [Member] |  |
Amortizable intangible assets, gross carrying amount | $ 1,430 | 1,430
Amortizable intangible assets, accumulated amortization | (977) | (870)
Intangible assets, net | $ 453 | 560
Developed Technology Rights [Member] | Weighted Average [Member] |  |
Weighted average life (Year) | 3 years 2 months 12 days |
Other Intangible Assets [Member] |  |
Amortizable intangible assets, gross carrying amount | $ 694 | 694
Amortizable intangible assets, accumulated amortization | (468) | (361)
Intangible assets, net | $ 226 | $ 333
Other Intangible Assets [Member] | Weighted Average [Member] |  |
Weighted average life (Year) | 1 year 6 months |

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