Segment Data (Details 1) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Apr. 30, 2016	Apr. 30, 2015	Jan. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		$ 20,369	$ 24,819
Operating Profit (Loss)		169	3,220
Depreciation and Amortization Expense		287	246
Interest Expense		198	183
Income Tax Expense (Benefits)		(24)	892
Total assets	[1]	91,037		$ 88,260
Assets Less Intersegment	[1]	91,040		88,260
Property and Equipment		9,141		9,268
Capital Expenditures		30		840
Goodwill		871		871
Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		(7,630)	(10,260)
External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		20,370	24,820
Intersegment Eliminations [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		7,630	10,260
Operating Profit (Loss)		70	(140)
Depreciation and Amortization Expense		(40)	(30)
Interest Expense		0	0
Income Tax Expense (Benefits)		20	(30)
Total assets	[1]	(47,380)		(52,520)
Property and Equipment		(60)		(70)
Unites States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		12,780	13,650
Operating Profit (Loss)		1,570	2,570
Depreciation and Amortization Expense		40	40
Interest Expense		0	0
Income Tax Expense (Benefits)		0	0
Total assets	[1]	49,370		48,180
Assets Less Intersegment	[1]	32,490		33,630
Property and Equipment		2,150		2,200
Capital Expenditures		0		60
Goodwill		870		870
Unites States [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		590	810
Unites States [Member] | External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		12,190	12,840
Other foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		3,190	3,080
Operating Profit (Loss)		300	(100)
Depreciation and Amortization Expense		20	20
Interest Expense		40	20
Income Tax Expense (Benefits)		30	50
Total assets	[1]	19,570		17,550
Assets Less Intersegment	[1]	11,590		9,910
Property and Equipment		1,700		1,570
Capital Expenditures		0		80
Other foreign [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		320	70
Other foreign [Member] | External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		2,870	3,010
Europe (UK) [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		2,390	5,610
Operating Profit (Loss)		100	1,790
Depreciation and Amortization Expense		0	0
Interest Expense		0	0
Income Tax Expense (Benefits)		10	400
Total assets	[1]	5,190		5,050
Assets Less Intersegment	[1]	5,180		5,030
Property and Equipment		50		60
Capital Expenditures		0		0
Europe (UK) [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		0	10
Europe (UK) [Member] | External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		2,390	5,600
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		760	860
Operating Profit (Loss)		(10)	(50)
Depreciation and Amortization Expense		30	30
Interest Expense		0	0
Income Tax Expense (Benefits)		0	0
Total assets	[1]	3,980		4,250
Assets Less Intersegment	[1]	3,890		4,230
Property and Equipment		2,080		2,110
Capital Expenditures		0		40
Mexico [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		390	550
Mexico [Member] | External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		370	310
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		8,410	11,260
Operating Profit (Loss)		470	770
Depreciation and Amortization Expense		90	80
Interest Expense		40	40
Income Tax Expense (Benefits)		90	170
Total assets	[1]	27,360		29,920
Assets Less Intersegment	[1]	20,110		17,630
Property and Equipment		2,290		2,370
Capital Expenditures		20		160
China [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		5,860	8,200
China [Member] | External Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		2,550	3,060
Corporate [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		470	620
Operating Profit (Loss)		(2,330)	(1,620)
Depreciation and Amortization Expense		150	100
Interest Expense		120	120
Income Tax Expense (Benefits)		(170)	300
Total assets	[1]	34,350		37,180
Assets Less Intersegment	[1]	17,350		17,390
Property and Equipment		900		1,000
Capital Expenditures		0		500
Corporate [Member] | Intersegment Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales from continuing operations		470	$ 620
India [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total assets	[1]	(1,400)		(1,350)
Assets Less Intersegment	[1]	430		440
Property and Equipment		30		30
Capital Expenditures		$ 10		$ 0

[1] Negative assets reflect intersegment accounts eliminated in consolidation