Note 9 - Intangible Assets (Tables)

9 Months Ended

Oct. 31, 2023

Notes Tables

Schedule of Intangible Assets and Goodwill [Table Text Block]

			October 31, 2023							January 31, 2023
	Weighted
	Average Life at		Gross Carrying		Accumulated			Net Carrying		Gross Carrying		Accumulated			Net Carrying
	October 31, 2023		Amount		Amortization			Amount		Amount		Amortization			Amount
			(in thousands)							(in thousands)
Proprietary rights		5.1		7,473		(4,943	)		2,530		7,473		(4,612	)		2,861
Customer relationships		0.1		4,884		(4,827	)		57		4,884		(4,754	)		130
Patents		1.6		2,540		(2,140	)		400		2,540		(2,027	)		513
Trade name		2.6		134		(105	)		29		134		(97	)		37
Other		0.4		396		(339	)		57		375		(283	)		92
Intangible assets			$	15,427	$	(12,354	)	$	3,073	$	15,406	$	(11,773	)	$	3,633

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

For fiscal years ending January 31,		(in thousands)
2024	$	333
2025		538
2026		514
2027		316
2028		316
Thereafter		898
Total	$	2,915