Note 9 - Earnings Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jul. 31, 2024	Apr. 30, 2024	Jul. 31, 2023	Apr. 30, 2023	Jul. 31, 2024	Jul. 31, 2023
Basic (in shares)	7,954		8,029		7,930	8,017
Dilutive effect of equity compensation plans (in shares)	171		110		57	0
Weighted average common shares outstanding assuming full dilution (in shares)	8,125		8,139		7,987	8,017
Stock options and restricted stock not included in the computation of diluted earnings per share of common stock because the option exercise prices or grant date prices exceeded the average market prices of the common shares (in shares)	0		79		114	18
Stock options and restricted stock with exercise prices or grant date prices below the average market prices (in shares)	171		110		57	170
Net income (loss) attributable to common stock	$ 3,289	$ 1,443	$ 1,022	$ (1,123)	$ 4,732	$ (100)
Basic (in dollars per share)	$ 0.41		$ 0.13		$ 0.6	$ (0.01)
Diluted (in dollars per share)	$ 0.4		$ 0.13		$ 0.59	$ (0.01)