Note 9 - Intangible Assets (Tables)

9 Months Ended

Oct. 31, 2024

Notes Tables

Schedule of Intangible Assets and Goodwill [Table Text Block]

			October 31, 2024							January 31, 2024
	Weighted
	Average Life at		Gross Carrying		Accumulated			Net Carrying		Gross Carrying		Accumulated			Net Carrying
	October 31, 2024		Amount		Amortization			Amount		Amount		Amortization			Amount
			(in thousands)							(in thousands)
Proprietary rights		4.1		7,473		(5,376	)		2,097		7,473		(5,053	)		2,420
Customer relationships		—		4,884		(4,884	)		—		4,884		(4,852	)		32
Patents		1.0		2,540		(2,267	)		273		2,540		(2,190	)		350
Trade name		1.6		134		(116	)		18		134		(108	)		26
Other		0.1		416		(384	)		32		426		(366	)		60
Intangible assets			$	15,447	$	(13,027	)	$	2,420	$	15,457	$	(12,569	)	$	2,888

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

For fiscal years ending January 31,		(in thousands)
2025	$	204
2026		506
2027		367
2028		302
2029		220
Thereafter		821
Total	$	2,420