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Note 8 - Intangible Assets

9 Months Ended

Oct. 31, 2022

Goodwill and Intangible Assets Disclosure [Text Block]

8. Intangible Assets

		*October 31, 2022*										*January 31, 2022*
	*Weighted*	*Gross*								*Net*		*Gross*								*Net*
	*Average Life at*	*Carrying*		*Accumulated*						*Carrying*		*Carrying*		*Accumulated*						*Carrying*
	*October 31, 2022*	*Amount*		*Amortization*			*Impairment*			*Amount*		*Amount*		*Amortization*			*Impairment*			*Amount*
		(in thousands)										(in thousands)
Proprietary rights	5.3		8,237		(4,492	)		—			3,745		8,237		(4,150	)		—			4,087
Customer relationships	0.2		5,024		(4,870	)		—			154		5,024		(4,797	)		—			227
Patents	2.2		2,540		(1,965	)		—			575		2,540		(1,778	)		—			762
Trade name	3.6		894		(94	)		(760	)		40		894		(85	)		(760	)		49
Developed technology	3.2		1,430		(977	)		—			453		1,430		(870	)		—			560
Other	1.5		694		(468	)		—			226		694		(361	)		—			333
Intangible assets		$	18,819	$	(12,866	)	$	(760	)	$	5,193	$	18,819	$	(12,041	)	$	(760	)	$	6,018

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, 2022, 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 nine months ended October 31, 2022, there have been no substantive indicators of impairment.

Aggregate amortization expense was $0.8 million and $1.0 million for the nine months ended October 31, 2022 and 2021, respectively. As of October 31, 2022, future estimated amortization expense related to amortizable intangible assets was estimated to be:

For fiscal years ending January 31,		(in thousands)
2023	$	274
2024		955
2025		725
2026		634
2027		333
Thereafter		1,349
Total	$	4,270