Condensed Consolidated Statements of Income Unaudited - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Income Statement [Abstract]
Net sales	$ 26,893	$ 22,569
Costs of goods sold	17,809	14,884
Gross profit	9,084	7,685
Selling, general and administrative expenses	12,681	12,154
Gain on sale of property, plant & equipment	0	(1)
Operating loss	(3,597)	(4,468)
Pension expense	188	120
Interest expense	700	446
Income (loss) before income taxes	(4,485)	(5,034)
Income tax (benefit) expense	(1,418)	(1,462)
Net income (loss)	$ (3,067)	$ (3,572)
Net income (loss) per common share:
Basic (usd per share)	$ (0.20)	$ (0.23)
Diluted (usd per share)	$ (0.20)	$ (0.23)
Weighted average shares outstanding:
Basic (shares)	15,486	15,317
Diluted (shares)	15,486	15,317