Note 9 - Intangible Assets (Tables)

3 Months Ended

Apr. 30, 2024

Notes Tables

Schedule of Intangible Assets and Goodwill [Table Text Block]

			April 30, 2024							January 31, 2024
	Weighted
	Average Life at		Gross Carrying		Accumulated			Net Carrying		Gross Carrying		Accumulated			Net Carrying
	April 30, 2024		Amount		Amortization			Amount		Amount		Amortization			Amount
			(in thousands)							(in thousands)
Proprietary rights		4.6		7,473		(5,168	)		2,305		7,473		(5,053	)		2,420
Customer relationships		0.1		4,884		(4,876	)		8		4,884		(4,852	)		32
Patents		1.2		2,540		(2,216	)		324		2,540		(2,190	)		350
Trade name		2.1		134		(111	)		23		134		(108	)		26
Other		0.2		416		(362	)		54		426		(366	)		60
Intangible assets			$	15,447	$	(12,733	)	$	2,714	$	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	$	442
2026		520
2027		381
2028		315
2029		213
Thereafter		843
Total	$	2,714