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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