CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
CONDENSED CONSOLIDATED BALANCE SHEETS
Allowance for doubtful accounts	$ 721	$ 700
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,500,000	1,500,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	8,542,372	8,498,457
Common stock, shares outstanding	7,805,676	7,984,518
Treasury stock, shares	736,696	509,242