CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Jan. 31, 2021	Jan. 31, 2020
CONSOLIDATED BALANCE SHEETS
Allowance for doubtful accounts	$ 700	$ 497
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	8,498,457	8,481,665
Common stock, shares outstanding	7,984,518	7,972,423
Treasury stock, shares	509,242	509,242