Note 9 - Goodwill and Other Intangible Assets (Tables)

9 Months Ended

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