UNAUDITED QUARTERLY RESULTS OF OPERATIONS (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	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, 2017	Jan. 31, 2016
Quarterly Financial Data [Line Items]
Net sales from continuing operations	$ 20,302	$ 23,243	$ 22,269	$ 20,369	$ 20,473	$ 24,888	$ 29,465	$ 24,819	$ 86,183	$ 99,646
Gross profit from continuing operations	7,752	8,519	8,590	6,776	6,010	9,248	11,795	9,279	31,637	36,333
Earnings (loss) from continuing operations	1,989	2,248	2,631	(21)	(300)	3,192	5,700	3,220	6,847	11,812
Net income (loss) from continuing operations	$ 946	$ 1,513	$ 1,431	$ 3	$ (78)	$ 2,120	$ 3,588	$ 2,160	$ 3,893	$ 7,790
Basic net earnings (loss) per share - continuing operations (in dollars per share)	$ 0.13	$ 0.21	$ 0.20	$ 0.00	$ (0.01)	$ 0.29	$ 0.50	$ 0.31	$ 0.54	$ 0.54
Diluted net earnings (loss) per share - continuing operations (in dollars per share)	$ 0.13	$ 0.21	$ 0.20	$ 0.00	$ (0.01)	$ 0.29	$ 0.50	$ 0.30	$ 0.53	$ 0.53