Note 11 - Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Jan. 31, 2022
Amortizable intangible assets, gross carrying amount	$ 18,831	$ 18,819
Amortizable intangible assets, accumulated amortization	(13,140)	(12,041)
Intangible assets, net	4,931	6,018
Amortizable intangible assets, impairment	(760)	(760)
Proprietary Rights [Member]
Amortizable intangible assets, gross carrying amount	8,238	8,237
Amortizable intangible assets, accumulated amortization	(4,606)	(4,150)
Intangible assets, net	$ 3,632	4,087
Proprietary Rights [Member] | Weighted Average [Member]
Weighted average life (Year)	5 years 1 month 6 days
Customer Relationships [Member]
Weighted average life (Year)	8 years
Amortizable intangible assets, gross carrying amount	$ 5,024	5,024
Amortizable intangible assets, accumulated amortization	(4,894)	(4,797)
Intangible assets, net	$ 130	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	(2,027)	(1,778)
Intangible assets, net	$ 513	762
Patents [Member] | Weighted Average [Member]
Weighted average life (Year)	2 years
Trade Names [Member]
Amortizable intangible assets, gross carrying amount	$ 894	894
Amortizable intangible assets, accumulated amortization	(97)	(85)
Intangible assets, net	37	49
Amortizable intangible assets, impairment	$ (760)	(760)
Trade Names [Member] | Weighted Average [Member]
Weighted average life (Year)	3 years 3 months 18 days
Developed Technology Rights [Member]
Amortizable intangible assets, gross carrying amount	$ 1,430	1,430
Amortizable intangible assets, accumulated amortization	(1,013)	(870)
Intangible assets, net	$ 417	560
Developed Technology Rights [Member] | Weighted Average [Member]
Weighted average life (Year)	2 years 10 months 24 days
Other Intangible Assets [Member]
Amortizable intangible assets, gross carrying amount	$ 705	694
Amortizable intangible assets, accumulated amortization	(503)	(361)
Intangible assets, net	$ 202	$ 333
Other Intangible Assets [Member] | Weighted Average [Member]
Weighted average life (Year)	1 year 3 months 18 days