Segment Reporting (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Jan. 31, 2019
Net sales	$ 24,680	$ 24,340
External sales	24,680	24,340
Intersegment sales	11,290	12,320
Operating profit (loss)	(315)	2,416
Depreciation and amortization expense	383	187
Interest expense	34	31
Income tax expense	89	517
Capital expenditures	170	270
Total assets	101,565		$ 94,723
Total assets less intersegment	101,570		94,720
Property and equipment	10,596		10,781
Goodwill	871		871
USA
Net sales	13,900	13,310
External sales	12,870	12,350
Intersegment sales	1,030	960
Operating profit (loss)	820	2,630
Depreciation and amortization expense	130	30
Capital expenditures	60	(30)
Total assets	68,710		67,260
Total assets less intersegment	31,040		29,760
Property and equipment	3,740		870
Goodwill	870		870
Other Foreign
Net sales	1,360	1,490
External sales	780	840
Intersegment sales	580	650
Operating profit (loss)	140	60
Depreciation and amortization expense	(10)	10
Capital expenditures	0	40
Total assets	1,680		1,540
Total assets less intersegment	3,130		2,850
Property and equipment	200		190
Europe (UK)
Net sales	2,390	2,570
External sales	2,390	2,570
Operating profit (loss)	10	90
Depreciation and amortization expense	0	0
Income tax expense	0	20
Total assets	4,490		4,370
Total assets less intersegment	4,490		4,360
Property and equipment	10		10
Mexico
Net sales	900	1,470
External sales	600	1,110
Intersegment sales	300	360
Operating profit (loss)	(180)	130
Depreciation and amortization expense	40	30
Capital expenditures	60	80
Total assets	4,990		5,000
Total assets less intersegment	4,950		5,130
Property and equipment	2,150		2,140
Asia
Net sales	13,180	13,830
External sales	3,830	3,950
Intersegment sales	9,350	9,880
Operating profit (loss)	230	580
Depreciation and amortization expense	140	50
Income tax expense	150	160
Capital expenditures	40	180
Total assets	41,090		39,520
Total assets less intersegment	26,490		20,970
Property and equipment	3,100		3,170
Canada
Net sales	2,500	2,210
External sales	2,490	2,190
Intersegment sales	10	20
Operating profit (loss)	250	370
Depreciation and amortization expense	0	20
Income tax expense	40	80
Total assets	7,200		7,470
Total assets less intersegment	6,380		6,640
Property and equipment	1,260		1,260
Latin America
Net sales	1,740	1,420
External sales	1,720	1,330
Intersegment sales	20	90
Operating profit (loss)	240	140
Depreciation and amortization expense	10	10
Interest expense	20	20
Income tax expense	10	10
Total assets	7,120		7,420
Total assets less intersegment	5,350		5,270
Property and equipment	60		70
Corporate
Net sales	0	360
Intersegment sales	0	360
Operating profit (loss)	(1,940)	(1,790)
Depreciation and amortization expense	80	50
Interest expense	10	10
Income tax expense	(130)	190
Total assets	24,020		25,070
Total assets less intersegment	19,740		19,740
Intersegment
Net sales	(11,290)	(12,320)
Operating profit (loss)	110	210
Depreciation and amortization expense	(10)	(10)
Income tax expense	20	$ 60
Total assets	(57,730)		(62,930)
Property and equipment	$ 70		$ 70