Segment Reporting (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Jan. 31, 2020
Net sales	$ 45,580	$ 24,680
External sales	45,580	24,680
Intersegment sales	13,290	11,290
Operating profit (loss)	12,370	(315)
Depreciation and amortization expense	453	383
Interest expense	17	34
Income tax expense	3,725	89
Capital expenditures	190	1,030
Total Assets	107,724		$ 99,405
Total assets less intersegment	107,720		99,410
Property and equipment	9,847		10,113
Goodwill	871		871
USA
Net sales	24,130	1,390
External sales	23,110	12,870
Intersegment sales	1,020	1,030
Operating profit (loss)	4,330	(1,120)
Depreciation and amortization expense	220	210
Interest expense	10	10
Income tax expense	2,280	(130)
Capital expenditures	60	250
Total Assets	84,260		88,080
Total assets less intersegment	47,420		49,940
Property and equipment	3,170		3,320
Goodwill	870		870
Other Foreign
Net sales	3,040	1,360
External sales	2,300	780
Intersegment sales	740	580
Operating profit (loss)	1,230	140
Depreciation and amortization expense	10	(10)
Interest expense	0	0
Income tax expense	10	0
Capital expenditures	20	10
Total Assets	2,600		1,610
Total assets less intersegment	4,590		3,330
Property and equipment	180		150
Goodwill	0		0
Europe (UK)
Net sales	3,010	2,390
External sales	3,010	2,390
Intersegment sales	0	0
Operating profit (loss)	460	10
Depreciation and amortization expense	0	0
Interest expense	0	0
Income tax expense	80	0
Capital expenditures	0	10
Total Assets	4,830		4,520
Total assets less intersegment	4,830		4,520
Property and equipment	10		10
Goodwill	0		0
Mexico
Net sales	1,820	900
External sales	1,370	600
Intersegment sales	450	300
Operating profit (loss)	220	(180)
Depreciation and amortization expense	40	40
Interest expense	0	0
Income tax expense	0	0
Capital expenditures	0	170
Total Assets	5,450		5,000
Total assets less intersegment	5,580		5,160
Property and equipment	2,130		2,170
Goodwill	0		0
Asia
Net sales	20,020	13,180
External sales	9,050	3,830
Intersegment sales	10,970	9,350
Operating profit (loss)	4,510	230
Depreciation and amortization expense	180	140
Interest expense	0	0
Income tax expense	900	150
Capital expenditures	110	580
Total Assets	46,800		44,300
Total assets less intersegment	32,830		24,730
Property and equipment	3,110		3,190
Goodwill	0		0
Canada
Net sales	4,310	2,500
External sales	4,310	2,490
Intersegment sales	0	10
Operating profit (loss)	1,130	250
Depreciation and amortization expense	20	0
Interest expense	0	0
Income tax expense	310	40
Capital expenditures	0	0
Total Assets	6,380		6,090
Total assets less intersegment	6,370		6,070
Property and equipment	1,140		1,150
Goodwill	0		0
Latin America
Net sales	2,540	1,740
External sales	2,430	1,720
Intersegment sales	110	20
Operating profit (loss)	570	240
Depreciation and amortization expense	10	10
Interest expense	10	20
Income tax expense	160	10
Capital expenditures	0	10
Total Assets	6,270		5,770
Total assets less intersegment	6,100		5,660
Property and equipment	30		40
Goodwill	0		0
Intersegment
Net sales	(13,290)	(11,290)
External sales	0	0
Intersegment sales	0	0
Operating profit (loss)	(80)	110
Depreciation and amortization expense	(30)	(10)
Interest expense	0	0
Income tax expense	(10)	20
Capital expenditures	0	$ 0
Total Assets	(48,870)		(55,960)
Total assets less intersegment	0		0
Property and equipment	80		80
Goodwill	$ 0		$ 0