Note 9 - Earnings Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Oct. 31, 2024	Jul. 31, 2024	Apr. 30, 2024	Oct. 31, 2023	Jul. 31, 2023	Apr. 30, 2023	Oct. 31, 2024	Oct. 31, 2023
Basic (in shares)	7,981			7,955			7,947	7,996
Dilutive effect of equity compensation plans (in shares)	46			66			44	110
Weighted average common shares outstanding assuming full dilution (in shares)	8,027			8,021			7,991	8,106
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			122			2	18
Stock options and restricted stock with exercise prices or grant date prices below the average market prices (in shares)	46			66			44	170
Net income attributable to common stock	$ 2,491	$ 3,289	$ 1,443	$ 1,935	$ 1,022	$ (1,123)	$ 7,223	$ 1,834
Basic (in dollars per share)	$ 0.31			$ 0.24			$ 0.91	$ 0.23
Diluted (in dollars per share)	$ 0.31			$ 0.24			$ 0.9	$ 0.23