Note 8 - Intangible Assets

3 Months Ended

Apr. 30, 2023

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

8. Intangible Assets

		April 30, 2023										January 31, 2023
	Weighted	Gross								Net		Gross								Net
	Average Life at	Carrying		Accumulated						Carrying		Carrying		Accumulated						Carrying
	April 30, 2023	Amount		Amortization			Impairment			Amount		Amount		Amortization			Impairment			Amount
		(in thousands)										(in thousands)
Proprietary rights	4.9		8,238		(4,722	)		—			3,516		8,238		(4,606	)		—			3,632
Customer relationships	0.1		5,024		(4,919	)		—			105		5,024		(4,894	)		—			130
Patents	1.8		2,540		(2,090	)		—			450		2,540		(2,027	)		—			513
Trade name	3.1		894		(99	)		(760	)		35		894		(97	)		(760	)		37
Developed technology	2.7		1,430		(1,049	)		—			381		1,430		(1,013	)		—			417
Other	1.1		714		(537	)		—			177		705		(503	)		—			202
Intangible assets		$	18,840	$	(13,416	)	$	(760	)	$	4,664	$	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 three months ended April 30, 2023, there have been no substantive indicators of impairment.

Aggregate amortization expense was $276,000 and $271,000 for the three months ended April 30, 2023 and 2022, respectively. As of April 30, 2023, future estimated amortization expense related to amortizable intangible assets was estimated to be:

For fiscal years ending January 31,		(in thousands)
2024	$	757
2025		728
2026		628
2027		349
2028		283
Thereafter		996
Total	$	3,741