Note 8 - Earnings (Loss) Per Share - Summary of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
Basic (in shares)	7,919	8,165
Dilutive effect of equity compensation plans (in shares)	0	0
Weighted average common shares outstanding assuming full dilution (in shares)	7,919	8,165
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)	39	103
Stock options and restricted stock with exercise prices or grant date prices below the average market prices (in shares)	279	279
Net loss	$ (885)	$ (843)
Basic (in dollars per share)	$ (0.11)	$ (0.10)
Diluted (in dollars per share)	$ (0.11)	$ (0.10)