Note 7 - Intangible Assets

3 Months Ended

Apr. 30, 2026

Notes to Financial Statements

Intangible Asset and Goodwill [Text Block]

7. Intangible Assets

						*April 30, 2026*												*January 31, 2026*
		*Weighted*
		*Average Life at*				*Gross Carrying*				*Accumulated*				*Net Carrying*				*Gross Carrying*				*Accumulated*				*Net Carrying*
		*April 30, 2026*				*Amount*				*Amortization*				*Amount*				*Amount*				*Amortization*				*Amount*
						(in thousands)												(in thousands)
Proprietary rights			2.9				7,472				(6,016	)			1,456				7,472				(5,911	)			1,561
Customer relationships			—				4,884				(4,884	)			—				4,884				(4,884	)			—
Patents			0.6				2,540				(2,383	)			157				2,540				(2,362	)			178
Trade name			0.1				134				(133	)			1				134				(130	)			4
Other			—				495				(495	)			—				498				(488	)			10
Intangible assets						$	15,525			$	(13,911	)		$	1,614			$	15,528			$	(13,775	)		$	1,753

On January 31, 2026, 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, 2026, there have been no substantive indicators of impairment.

Aggregate amortization expense was approximately $113,000 and $148,000 for the three months ended April 30, 2026, and April 30, 2025, respectively. As of April 30, 2026, future estimated amortization expense related to amortizable intangible assets was estimated to be:

For fiscal years ending January 31,			(in thousands)
2027		$	253
2028			315
2029			213
2030			213
2031			213
Thereafter			407
Total		$	1,614