Condensed Consolidated Statements of (Loss) Income Unaudited - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Income Statement [Abstract]
Net sales	$ 59,285	$ 70,359	$ 76,884	$ 97,252
Costs of goods sold	36,082	41,620	48,777	59,429
Gross profit	23,203	28,739	28,107	37,823
Selling, general and administrative expenses	15,488	18,557	27,419	31,238
Loss on sale of property, plant & equipment	0	3	0	3
Operating income	7,715	10,179	688	6,582
Pension expense	542	188	1,084	376
Interest expense	494	907	898	1,607
(Loss) income before income taxes	6,679	9,084	(1,294)	4,599
Income tax (benefit) expense	3,126	3,217	(149)	1,799
Net (loss) income	$ 3,553	$ 5,867	$ (1,145)	$ 2,800
Net income (loss) per common share:
Basic (usd per share)	$ 0.23	$ 0.38	$ (0.07)	$ 0.18
Diluted (usd per share)	$ 0.23	$ 0.38	$ (0.07)	$ 0.18
Weighted average shares outstanding:
Basic (shares)	15,733	15,561	15,694	15,524
Diluted (shares)	15,746	15,568	15,694	15,529