Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Net income per common share:
Net Income (Loss)	$ 1,320	$ 1,129
Denominator for basic net income per share (weighted-average shares which exclude shares in the treasury, 1,353,508 and 964,722 at April 30, 2023 and 2022, respectively	7,325,005	7,615,967
Effect of dilutive securities from restricted stock plan	177,858	182,231
Denominator for diluted net income per share (adjusted weighted average shares)	7,502,863	7,798,198
Basic net income per share	$ 0.18	$ 0.15
Diluted net income per share	$ 0.18	$ 0.14