Note 7 - Intangible Assets (Tables)

6 Months Ended

Jul. 31, 2026

Notes Tables

Intangible Asset and Goodwill [Table Text Block]

						*July 31, 2026*												*January 31, 2026*
		*Weighted*
		*Average Life at*				*Gross Carrying*				*Accumulated*				*Net Carrying*				*Gross Carrying*				*Accumulated*				*Net Carrying*
		*July 31, 2026*				*Amount*				*Amortization*				*Amount*				*Amount*				*Amortization*				*Amount*
						(in thousands)												(in thousands)
Proprietary rights			2.7				7,472				(6,087	)			1,385				7,472				(5,911	)			1,561
Customer relationships			—				4,884				(4,884	)			—				4,884				(4,884	)			—
Patents			0.5				2,540				(2,407	)			133				2,540				(2,362	)			178
Trade name			—				134				(134	)			—				134				(130	)			4
Other			—				509				(495	)			14				498				(488	)			10
Intangible assets						$	15,539			$	(14,007	)		$	1,532			$	15,528			$	(13,775	)		$	1,753

Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block]

For fiscal years ending January 31,			(in thousands)
2027		$	157
2028			312
2029			213
2030			213
2031			213
Thereafter			424
Total		$	1,532