Note 11 - Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2022

Notes Tables

Schedule of Intangible Assets and Goodwill [Table Text Block]

			January 31, 2022										January 31, 2021
	Weighted
	Average		Gross								Net		Gross								Net
	Life at		Carrying		Accumulated						Carrying		Carrying		Accumulated						Carrying
	1/31/2022		Amount		Amortization			Impairment			Amount		Amount		Amortization			Impairment			Amount
			(in thousands)										(in thousands)
Goodwill			$	7,060	$	—		$	(7,060	)	$	—	$	7,060	$	—		$	(7,060	)	$	—
Proprietary rights		6.0	$	8,237	$	(4,150	)		—			4,087	$	7,781	$	(3,688	)		—			4,093
Customer relationships		0.4		5,024		(4,797	)		—			227		5,024		(4,513	)		—			511
Patents		2.9		2,540		(1,778	)		—			762		2,440		(1,528	)		—			912
Trade name		4.3		894		(85	)		(760	)		49		894		(74	)		(760	)		60
Developed technology		3.9		1,430		(870	)		—			560		1,430		(727	)		—			703
Other		2.3		694		(361	)		—			333		684		(213	)		—			471
Amortizable intangible assets			$	18,819	$	(12,041	)	$	(760	)	$	6,018	$	18,253	$	(10,743	)	$	(760	)	$	6,750

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

For fiscal year ending January 31:
2023	$	1,185
2024		1,050
2025		820
2026		726
2027		425
Thereafter		1,812
Total	$	6,018