Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021	Jan. 31, 2022
Total [Member]
Net sales	$ 28,390	$ 30,030	$ 83,850	$ 91,590
External sales	28,390	30,030	83,850	91,590
Intersegment sales	13,900	14,120	38,280	43,350
Operating profit	2,220	4,230	5,470	14,920
Total assets less intersegment	136,420		136,420		$ 140,790
USA [Member]
Net sales	15,370	11,720	41,030	39,430
External sales	14,020	10,610	37,150	36,460
Intersegment sales	1,340	1,090	3,880	2,970
Operating profit	(110)	(1,890)	(3,420)	(2,210)
Total assets less intersegment	53,390		53,390		53,360
Other Foreign [Member]
Net sales	2,330	2,220	6,950	7,230
External sales	1,730	1,690	5,370	5,020
Intersegment sales	610	540	1,590	2,220
Operating profit	250	400	380	1,400
Total assets less intersegment	9,120		9,120		8,920
Europe (UK) [Member]
Net sales	1,480	1,700	5,340	8,790
External sales	1,480	1,700	5,340	8,790
Operating profit	(450)	(40)	(1,080)	1,720
Total assets less intersegment	7,920		7,920		8,790
Mexico [Member]
Net sales	1,360	1,250	4,100	4,120
External sales	990	990	2,900	3,290
Intersegment sales	360	270	1,190	830
Operating profit	(320)	(280)	(940)	(610)
Total assets less intersegment	5,810		5,810		5,060
Asia [Member]
Net sales	16,780	21,850	50,750	59,310
External sales	5,190	9,830	19,160	22,400
Intersegment sales	11,590	12,020	31,590	36,910
Operating profit	2,440	4,960	8,450	11,340
Total assets less intersegment	46,610		46,610		52,260
Canada [Member]
Net sales	2,410	2,920	6,950	6,780
External sales	2,410	2,920	6,950	6,780
Operating profit	320	650	1,270	1,410
Total assets less intersegment	5,560		5,560		4,990
Latin America [Member]
Net sales	2,560	2,490	7,010	9,280
External sales	2,570	2,290	6,980	8,850
Intersegment sales	0	200	30	420
Operating profit	370	1,210	430	2,100
Total assets less intersegment	8,010		8,010		$ 7,410
Intersegment [Member]
Net sales	(13,900)	(14,120)	(38,280)	(43,350)
Operating profit	$ (280)	$ 0	$ (400)	$ (230)