CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Jan. 31, 2022	Jan. 31, 2021
CONSOLIDATED BALANCE SHEETS
Allowance for doubtful accounts	$ 666	$ 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
Preferred stock, shares outstanding	0	0
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	8,555,672	8,498,457
Common stock, shares outstanding	7,615,967	7,984,518
Treasury stock, shares	939,705	509,242