CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jul. 31, 2018	Jan. 31, 2018
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 515	$ 480
Inventories, net of reserves	$ 2,463	$ 2,422
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	$ .01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	8,472,640	8,472,640
Common stock, shares outstanding	8,116,199	8,116,199
Treasury stock, shares	356,441	356,441