Condensed Consolidated Statements of Income Unaudited - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2017	Apr. 30, 2016
Income Statement [Abstract]
Net sales	$ 23,235	$ 20,827
Costs of goods sold	14,808	12,764
Gross profit	8,427	8,063
Selling, general and administrative expenses	11,692	10,909
Gain on sale of property, plant & equipment	0	(1)
Operating loss	(3,265)	(2,845)
Interest expense, net	295	264
Loss before income taxes	(3,560)	(3,109)
Income tax (benefit) expense	(1,349)	29
Net loss	$ (2,211)	$ (3,138)
Net income (loss) per common share:
Basic (usd per share)	$ (0.15)	$ (0.21)
Diluted (usd per share)	$ (0.15)	$ (0.21)
Weighted average shares outstanding:
Basic (shares)	15,128	14,971
Diluted (shares)	15,128	14,971