Note 9 - Intangible Assets

6 Months Ended

Jul. 31, 2023

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

9. Intangible Assets

		July 31, 2023										January 31, 2023
	Weighted
	Average Life at	Gross Carrying		Accumulated						Net Carrying		Gross Carrying		Accumulated						Net Carrying
	July 31, 2023	Amount		Amortization			Impairment			Amount		Amount		Amortization			Impairment			Amount
		(in thousands)										(in thousands)
Proprietary rights	4.7		8,238		(4,835	)		—			3,403		8,238		(4,606	)		—			3,632
Customer relationships	0.1		5,024		(4,943	)		—			81		5,024		(4,894	)		—			130
Patents	1.6		2,540		(2,123	)		—			417		2,540		(2,027	)		—			513
Trade name	2.8		894		(102	)		(760	)		32		894		(97	)		(760	)		37
Developed technology	2.4		1,430		(1,084	)		—			346		1,430		(1,013	)		—			417
Other	0.9		714		(575	)		—			139		705		(503	)		—			202
Intangible assets		$	18,840	$	(13,662	)	$	(760	)	$	4,418	$	18,831	$	(13,140	)	$	(760	)	$	4,931

Approximately $923,000 of the gross carrying amount of intangible assets, primarily in proprietary rights, are related to technology development projects that have not yet been completed. As a result, these intangible assets are not currently being amortized.

On January 31, 2023, the Company completed an annual review of amortizable intangible assets. Based on a review of qualitative factors, it was determined that there were no events or changes in circumstances indicating that the carrying value of amortizable intangible assets was not recoverable. During the six months ended July 31, 2023, there have been no substantive indicators of impairment.

Aggregate amortization expense was $522,000 and $427,000 for the six months ended July 31, 2023 and 2022, respectively. As of July 31, 2023, future estimated amortization expense related to amortizable intangible assets was estimated to be:

For fiscal years ending January 31,		(in thousands)
2024	$	468
2025		743
2026		617
2027		330
2028		283
Thereafter		1,054
Total	$	3,495