CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2022	Jan. 31, 2022
CONDENSED CONSOLIDATED BALANCE SHEETS
Allowance for doubtful accounts	$ 728	$ 666
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,500,000	1,500,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	8,650,580	8,555,672
Common stock, shares outstanding	7,514,725	7,615,967
Treasury stock, shares	1,135,855	939,705