Note 8 - Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Apr. 30, 2022

Notes Tables

Schedule of Intangible Assets and Goodwill [Table Text Block]

		April 30, 2022										January 31, 2022
	Weighted	Gross								Net		Gross								Net
	Average Life at	Carrying		Accumulated						Carrying		Carrying		Accumulated						Carrying
	4/30/2022	Amount		Amortization			Impairment			Amount		Amount		Amortization			Impairment			Amount
		(in thousands)										(in thousands)
Goodwill		$	7,060	$	—		$	(7,060	)	$	—	$	7,060	$	—		$	(7,060	)	$	—
Proprietary rights	5.8		8,237		(4,267	)		—			3,970		8,237		(4,150	)		—			4,087
Customer relationships	0.3		5,024		(4,821	)		—			203		5,024		(4,797	)		—			227
Patents	2.7		2,540		(1,840	)		—			700		2,540		(1,778	)		—			762
Trade name	4.1		894		(88	)		(760	)		46		894		(85	)		(760	)		49
Developed technology	3.7		1,430		(906	)		—			524		1,430		(870	)		—			560
Other	2.1		694		(394	)		—			300		694		(361	)		—			333
Amortizable intangible assets		$	18,819	$	(12,316	)	$	(760	)	$	5,743	$	18,819	$	(12,041	)	$	(760	)	$	6,018

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

For fiscal years ending January 31,		(in thousands)
2023	$	888
2024		1,045
2025		820
2026		723
2027		422
Thereafter		1,845
Total	$	5,743