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Note 9 - Goodwill and Other Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands | 10 Months Ended |
--- | --- | ---
Oct. 31, 2021 | Jan. 31, 2021
Goodwill, gross carrying amount | $ 7,060 | $ 7,060
Goodwill, impairment | (7,060) | (7,060)
Goodwill, net carrying amount | 0 | 0
Amortizable intangible assets, gross carrying amount | 18,693 | 18,253
Amortizable intangible assets, accumulated amortization | (11,743) | (10,743)
Intangible assets, net | 6,190 | 6,750
Amortizable intangible assets, impairment | $ (760) | (760)
Proprietary Rights [Member] |  |
Weighted average life (Year) | 6 years 2 months 12 days |
Amortizable intangible assets, gross carrying amount | $ 8,221 | 7,781
Amortizable intangible assets, accumulated amortization | (4,028) | (3,688)
Intangible assets, net | $ 4,193 | 4,093
Customer Relationships [Member] |  |
Weighted average life (Year) | 4 months 24 days |
Amortizable intangible assets, gross carrying amount | $ 5,024 | 5,024
Amortizable intangible assets, accumulated amortization | (4,772) | (4,513)
Intangible assets, net | $ 252 | 511
Patents [Member] |  |
Weighted average life (Year) | 2 years 10 months 24 days |
Amortizable intangible assets, gross carrying amount | $ 2,440 | 2,440
Amortizable intangible assets, accumulated amortization | (1,715) | (1,528)
Intangible assets, net | $ 725 | 912
Trade Names [Member] |  |
Weighted average life (Year) | 4 years 7 months 6 days |
Amortizable intangible assets, gross carrying amount | $ 894 | 894
Amortizable intangible assets, accumulated amortization | (83) | (74)
Intangible assets, net | 51 | 60
Amortizable intangible assets, impairment | $ (760) | (760)
Developed Technology Rights [Member] |  |
Weighted average life (Year) | 4 years 2 months 12 days |
Amortizable intangible assets, gross carrying amount | $ 1,430 | 1,430
Amortizable intangible assets, accumulated amortization | (834) | (727)
Intangible assets, net | $ 596 | 703
Other Intangible Assets [Member] |  |
Weighted average life (Year) | 2 years 7 months 6 days |
Amortizable intangible assets, gross carrying amount | $ 684 | 684
Amortizable intangible assets, accumulated amortization | (311) | (213)
Intangible assets, net | $ 373 | $ 471

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