EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Numerator
Net income from continuing operations	$ (4,919)	$ 1,806	$ 1,842	$ 1,711	$ 946	$ 1,513	$ 1,431	$ 3	$ (78)	$ 2,120	$ 3,588	$ 2,160	$ 440	$ 3,893	$ 7,790
Net loss from discontinued operations													0	0	(3,936)
Net income													$ 440	$ 3,893	$ 3,854
Denominator
Denominator for basic earnings per share (weighted-average shares which reflect 356,441 shares in the treasury)													7,638,264	7,257,553	7,171,965
Effect of dilutive securities from restricted stock plan and from dilutive effect of stock options													53,289	69,695	82,375
Denominator for diluted earnings per share (adjusted weighted average shares)													7,691,553	7,327,248	7,254,340
Basic earnings per share from continuing operations (in dollars per share)	$ (0.64)	$ 0.23	$ 0.25	$ 0.24	$ 0.13	$ 0.21	$ 0.2	$ 0	$ (0.01)	$ 0.29	$ 0.5	$ 0.31	$ 0.06	$ 0.54	$ 1.09
Basic loss per share from discontinued operations (in dollars per share)													0	0	(0.55)
Basic earnings per share (in dollars per share)													0.06	0.54	0.54
Diluted earnings per share from continuing operations (in dollars per share)	$ (0.64)	$ 0.23	$ 0.25	$ 0.23	$ 0.13	$ 0.21	$ 0.2	$ 0	$ (0.01)	$ 0.29	$ 0.5	$ 0.3	0.06	0.53	1.07
Diluted loss per share from discontinued operations (in dollars per share)													0	0	(0.54)
Diluted earnings per share (in dollars per share)													$ 0.06	$ 0.53	$ 0.53