UNAUDITED QUARTERLY RESULTS OF OPERATIONS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2016	Jan. 31, 2015	[1]
Quarterly Financial Data [Line Items]
Net sales from continuing operations	$ 20,473	$ 24,888	$ 29,465	$ 24,819	$ 25,306	$ 23,543	$ 22,812	$ 21,758	$ 99,646	$ 93,419
Gross profit from continuing operations	6,010	9,248	11,795	9,279	9,533	8,223	7,437	6,505	36,333	31,698
Earnings (loss) from continuing operations	(300)	3,192	5,700	3,220	3,022	1,283	1,798	858	11,812	6,961
Net income (loss) from continuing operations	$ (78)	$ 2,120	$ 3,588	$ 2,160	$ 11,925	$ (1,755)	$ 562	$ 354	$ 7,790	$ 11,086
Basic net earnings (loss) per share - continuing operations (in dollars per share)	$ (0.01)	$ 0.29	$ 0.50	$ 0.31	$ 1.69	$ (0.29)	$ 0.09	$ 0.06	$ 0.54	$ 1.35
Diluted net earnings (loss) per share - continuing operations (in dollars per share)	$ (0.01)	$ 0.29	$ 0.50	$ 0.30	$ 1.65	$ (0.29)	$ 0.09	$ 0.06	$ 0.53	$ 1.33

[1] Restated for discontinued operations