Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Jan. 31, 2024
Operating Profit (Loss)	$ 2,202	$ 1,938
Total assets	171,520		$ 153,745
Asia
Net sales	10,400	11,100
External sales	3,200	3,700
Intersegment sales	7,200	7,400
Operating Profit (Loss)	900	800
Total assets	30,300		29,000
Latin America
Net sales	4,900	3,200
External sales	4,900	3,100
Intersegment sales	0	100
Operating Profit (Loss)	1,700	900
Total assets	14,100		12,300
Intersegment [Member]
Net sales	(10,000)	(10,000)
Operating Profit (Loss)	100	1,100
USA
Net sales	15,900	13,600
External sales	14,300	12,300
Intersegment sales	1,600	1,300
Operating Profit (Loss)	(600)	(1,800)
Total assets	41,500		47,100
Mexico
Net sales	1,600	1,200
External sales	1,100	800
Intersegment sales	500	400
Operating Profit (Loss)	(400)	(400)
Total assets	10,500		10,200
Canada
Net sales	3,000	2,500
External sales	3,000	2,500
Operating Profit (Loss)	300	400
Total assets	8,700		8,300
Total Segment [Member]
Net sales	36,300	28,700
External sales	36,300	28,700
Intersegment sales	10,000	10,000
Operating Profit (Loss)	2,200	1,900
Total assets	171,500		153,700
Other Foreign [Member]
Net sales	4,500	3,100
External sales	3,800	2,300
Intersegment sales	700	800
Operating Profit (Loss)	600	700
Total assets	19,800		19,600
Europe UK
Net sales	6,000	4,000
External sales	6,000	4,000
Operating Profit (Loss)	(400)	$ 200
Total assets	$ 46,600		$ 27,200