Note 9 - Stock-based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Oct. 31, 2023	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Canceled options during the year (in shares)	0
Share-Based Payment Arrangement, Option [Member]
Outstanding, options (in shares)	40	40	67
Outstanding, weighted average exercise price (in dollars per share)	$ 10.85	$ 10.85	$ 9.51
Outstanding, weighted average remaining contractual term (Year)		8 months 12 days	1 year 1 month 6 days	1 year 8 months 26 days
Outstanding, aggregate intrinsic value		$ 6	$ 19	$ 63
Exercised, options (in shares)		(1)	(16)
Exercised, weighted average exercise price (in dollars per share)		$ 6.85	$ 6.66
Canceled options during the year (in shares)		(17)	(11)
Expired or forfeited, weighted average exercise price (in dollars per share)		$ 11.15	$ 10.85
Options exercisable (in shares)		22	40
Options exercisable, weighted average exercise price (in dollars per share)		$ 11.15	$ 10.85
Options exercisable, weighted average remaining contractual term (Year)		8 months 12 days	1 year 1 month 6 days
Options exercisable, aggregate intrinsic value		$ 6	$ 19
Outstanding, options (in shares)		22	40	67
Outstanding, weighted average exercise price (in dollars per share)		$ 11.15	$ 10.85	$ 9.51