UNAUDITED QUARTERLY RESULTS OF OPERATIONS (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
Quarterly Financial Data [Line Items]
Net sales from continuing operations	$ 25,157	$ 23,960	$ 23,909	$ 22,961	$ 20,302	$ 23,243	$ 22,269	$ 20,369	$ 20,474	$ 24,888	$ 29,465	$ 24,819	$ 95,987	$ 86,183	$ 99,646
Gross profit from continuing operations	9,902	9,053	8,690	8,558	7,752	8,519	8,590	6,776	6,011	9,248	11,795	9,279	36,203	31,637	36,333
Operating profit (loss) from continuing operations	1,157	2,665	2,182	2,473	1,799	2,248	2,631	169	(300)	3,192	5,700	3,220	8,477	6,847	11,812
Net income (loss) 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
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
Income from continuing operations	$ (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