Segment Reporting (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2017	Jul. 31, 2016	Jan. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 23,909	$ 22,269	$ 46,870	$ 42,638
Operating Profit (Loss)	2,182	2,631	4,654	2,800
Depreciation and Amortization Expense	200	310	385	604
Interest Expense	36	175	112	373
Income Tax Expense (Benefits)	308	990	996	966
Total assets	88,679		88,679		$ 84,554
Assets Less Intersegment	88,680		88,680		84,550
Property and Equipment	8,672		8,672		8,527
Capital Expenditures	310	20	450	50
Goodwill	871		871		871
Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	(10,700)	(9,740)	(19,180)	(17,370)
External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	23,910	22,270	46,870	42,640
Intersegment Eliminations [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	10,700	9,740	19,180	17,370
Operating Profit (Loss)	80	(10)	170	60
Depreciation and Amortization Expense	(10)	(40)	(20)	(80)
Interest Expense	0	0	0	0
Income Tax Expense (Benefits)	20	(10)	40	10
Total assets	(54,470)		(54,470)		(52,730)
Property and Equipment	10		10		(20)
Unites States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	13,900	12,560	27,300	25,340
Operating Profit (Loss)	2,520	2,470	4,780	4,040
Depreciation and Amortization Expense	30	40	60	80
Interest Expense	0	0	0	0
Income Tax Expense (Benefits)	0	0	0	0
Total assets	61,040		61,040		56,340
Assets Less Intersegment	28,150		28,150		30,940
Property and Equipment	2,030		2,030		2,090
Capital Expenditures	10	0	10	0
Goodwill	870		870		870
Unites States [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	1,270	770	1,970	1,360
Unites States [Member] | External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	12,630	11,790	25,330	23,980
Other foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	4,680	3,720	8,730	6,910
Operating Profit (Loss)	670	250	1,100	550
Depreciation and Amortization Expense	30	60	70	80
Interest Expense	10	20	30	60
Income Tax Expense (Benefits)	210	80	260	110
Total assets	20,180		20,180		18,160
Assets Less Intersegment	12,580		12,580		10,170
Property and Equipment	1,540		1,540		1,550
Capital Expenditures	0	10	0	10
Other foreign [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	300	190	650	510
Other foreign [Member] | External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	4,380	3,530	8,080	6,400
Europe (UK) [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	2,080	2,670	4,210	5,060
Operating Profit (Loss)	40	180	110	280
Depreciation and Amortization Expense	0	0	0	0
Interest Expense	0	0	0	0
Income Tax Expense (Benefits)	30	20	40	30
Total assets	4,340		4,340		3,610
Assets Less Intersegment	4,280		4,280		3,580
Property and Equipment	30		30		30
Capital Expenditures	0	0	0	0
Europe (UK) [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0	40	0
Europe (UK) [Member] | External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	2,080	2,670	4,170	5,060
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	950	810	1,870	1,570
Operating Profit (Loss)	10	20	40	10
Depreciation and Amortization Expense	30	30	60	60
Interest Expense	0	0	0	0
Income Tax Expense (Benefits)	0	0	0	0
Total assets	4,240		4,240		3,990
Assets Less Intersegment	4,290		4,290		4,070
Property and Equipment	2,020		2,020		2,050
Capital Expenditures	20	0	30	0
Mexico [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	370	450	720	840
Mexico [Member] | External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	580	360	1,150	730
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	12,890	11,550	23,410	19,960
Operating Profit (Loss)	580	1,310	1,550	1,780
Depreciation and Amortization Expense	70	80	130	170
Interest Expense	0	40	0	90
Income Tax Expense (Benefits)	90	360	380	450
Total assets	34,320		34,320		30,540
Assets Less Intersegment	21,630		21,630		18,440
Property and Equipment	1,990		1,990		2,050
Capital Expenditures	40	0	60	20
China [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	8,650	7,630	15,270	13,490
China [Member] | External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	4,240	3,920	8,140	6,470
India [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total assets	(1,240)		(1,240)		(1,360)
Assets Less Intersegment	590		590		430
Property and Equipment	40		40		30
Capital Expenditures	20	10	20	20
Corporate [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	110	700	530	1,170
Operating Profit (Loss)	(1,720)	(1,590)	(3,100)	(3,920)
Depreciation and Amortization Expense	50	140	90	290
Interest Expense	20	120	80	220
Income Tax Expense (Benefits)	(40)	540	280	370
Total assets	20,270		20,270		26,000
Assets Less Intersegment	17,150		17,150		16,920
Property and Equipment	1,010		1,010		$ 750
Capital Expenditures	220	0	330	0
Corporate [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 110	$ 700	$ 530	$ 1,170