Segment Reporting (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019	Jan. 31, 2020
Operating profit (loss)	$ 12,490,000	$ 1,830,000	$ 34,600,000	$ 4,160,000
Total assets	132,250,000		132,250,000		$ 99,410,000
Total assets less intersegment	132,250,000		132,250,000		99,410,000
Property and equipment	10,020,000.00		10,020,000.00		10,110,000
Goodwill	870,000		870,000		870,000
Capital expenditures			1,330,000	1,030,000.00
Depreciation and amortization expense	500,000	430,000	1,420,000	1,270,000
Interest expense	0	30,000.00	10,000.00	100,000
Income tax expense	3,240,000	650,000	7,390,000	1,950,000
Net sales	41,450,000	27,460,000	122,050,000.00	79,620,000
External sales	41,450,000	27,460,000	122,050,000.00	79,620,000
Intersegment sales	18,270,000	11,580,000	49,180,000	38,800,000
USA
Operating profit (loss)	2,170,000	140,000	7,860,000	(290,000)
Total assets	89,190,000		89,190,000		88,080,000.00
Total assets less intersegment	53,730,000		53,730,000		49,940,000
Property and equipment	3,210,000		3,210,000		3,400,000
Goodwill	870,000		870,000		870,000
Capital expenditures			420,000	250,000
Depreciation and amortization expense	210,000	220,000	630,000	640,000
Interest expense	0	20,000.00	0	50,000.00
Income tax expense	1,990,000	380,000	3,430,000	810,000
Net sales	17,430,000	15,840,000	57,110,000	45,360,000
External sales	17,040,000.00	14,160,000	54,600,000	41,470,000
Intersegment sales	390,000	1,680,000	2,500,000	3,890,000
Other Foreign
Operating profit (loss)	960,000	140,000	3,350,000	300,000
Total assets	4,490,000		4,490,000		1,690,000
Total assets less intersegment	6,390,000		6,390,000		3,410,000
Property and equipment	270,000		270,000		150,000
Capital expenditures			220,000	10,000.00
Depreciation and amortization expense	10,000.00	0	30,000.00	20,000.00
Net sales	3,390,000	1,650,000	8,810,000	4,810,000
External sales	2,720,000	910,000	7,040,000.00	2,610,000
Intersegment sales	670,000	740,000	1,770,000	2,200,000
Europe (UK)
Operating profit (loss)	1,750,000	20,000.00	3,350,000	(20,000.00)
Total assets	9,020,000.00		9,020,000.00		4,520,000
Total assets less intersegment	9,000,000.00		9,000,000.00		4,520,000
Property and equipment	10,000.00		10,000.00		10,000.00
Capital expenditures			0	10,000.00
Interest expense	0	0	10,000.00	10,000.00
Income tax expense	330,000	10,000.00	610,000	10,000.00
Net sales	5,580,000	2,380,000	12,750,000	7,240,000
External sales	5,580,000	2,380,000	12,750,000	7,240,000
Mexico
Operating profit (loss)	110,000	20,000.00	120,000	(390,000)
Total assets	6,010,000.00		6,010,000.00		5,000,000.00
Total assets less intersegment	6,020,000.00		6,020,000.00		5,160,000
Property and equipment	2,390,000		2,390,000		2,170,000
Capital expenditures			350,000	170,000
Depreciation and amortization expense	50,000.00	40,000.00	130,000	120,000
Net sales	2,120,000	1,220,000	4,840,000	3,090,000.00
External sales	1,910,000	880,000	3,890,000	2,080,000.00
Intersegment sales	210,000	340,000	950,000	1,010,000.00
Asia
Operating profit (loss)	6,040,000.00	1,040,000.00	15,510,000	2,870,000
Total assets	58,860,000		58,860,000		44,220,000
Total assets less intersegment	42,510,000		42,510,000		24,650,000
Property and equipment	2,960,000		2,960,000		3,190,000
Capital expenditures			190,000	580,000
Depreciation and amortization expense	190,000	140,000	550,000	400,000
Income tax expense	510,000	160,000	2,240,000	670,000
Net sales	23,250,000	13,340,000	67,420,000	43,970,000
External sales	6,360,000	4,620,000	23,800,000	12,490,000
Intersegment sales	16,900,000	8,710,000	43,620,000	31,480,000
Canada
Operating profit (loss)	550,000	250,000	1,950,000	770,000
Total assets	7,820,000		7,820,000		6,090,000.00
Total assets less intersegment	7,790,000		7,790,000		6,070,000.00
Property and equipment	1,090,000.00		1,090,000.00		1,150,000
Depreciation and amortization expense	30,000.00	30,000.00	70,000.00	80,000.00
Income tax expense	200,000	100,000	580,000	320,000
Net sales	4,200,000	2,600,000	10,920,000	7,500,000
External sales	4,200,000	2,600,000	10,920,000	7,470,000
Intersegment sales	0	0	0	30,000.00
Latin America
Operating profit (loss)	1,240,000	210,000	2,930,000	810,000
Total assets	7,010,000.00		7,010,000.00		5,770,000
Total assets less intersegment	6,810,000		6,810,000		5,660,000
Property and equipment	90,000.00		90,000.00		40,000.00
Capital expenditures			150,000	10,000.00
Depreciation and amortization expense	10,000.00	10,000.00	30,000.00	30,000.00
Interest expense	0	10,000.00	0	40,000.00
Income tax expense	270,000	0	670,000	130,000
Net sales	3,750,000	2,010,000.00	9,380,000	6,450,000
External sales	3,640,000	1,910,000	9,050,000.00	6,260,000
Intersegment sales	100,000	110,000	340,000	190,000
Intersegment
Operating profit (loss)	(330,000)	10,000.00	(470,000)	110,000
Total assets	(50,150,000)		(50,150,000)		$ (55,960,000)
Depreciation and amortization expense	0	(10,000.00)	(20,000.00)	(20,000.00)
Income tax expense	(60,000.00)	0	(140,000)	10,000.00
Net sales	$ (18,270,000)	$ (11,580,000)	$ (49,180,000)	$ (38,800,000)