Manufacturing Segment Data (Details 1) (USD $)	3 Months Ended		9 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Jan. 31, 2013
Net Sales:
Net sales	$ 22,787,344	$ 24,238,573	$ 69,163,340	$ 71,718,608
External Sales:
Revenue from External Customers	22,790,000	24,240,000	69,160,000	71,720,000
Intersegment Sales:
Intersegment Revenue	9,320,000	6,970,000	27,700,000	19,730,000
Operating Profit (Loss):
Operating Profit (Loss)	(1,030,208)	267,398	29,898	444,309
Depreciation and Amortization Expense:
Depreciation and Amortization Expense	450,000	380,000	1,226,422	1,128,784
Interest Expense:
Interest Expense	649,436	270,273	1,390,623	766,119
Income Tax Expense (Benefits):
Income Tax Expense (benefits)	328,859	(295,340)	(3,103,143)	(669,024)
Total Assets:
Total assets	87,337,824		87,337,824		83,318,003
Long-Lived Assets:
Long-Lived Assets	12,580,000		12,580,000		14,090,000
USA [Member]
Net Sales:
Net sales	12,400,000	10,580,000	37,600,000	30,770,000
External Sales:
Revenue from External Customers	11,470,000	9,830,000	35,650,000	28,690,000
Intersegment Sales:
Intersegment Revenue	930,000	750,000	1,950,000	2,080,000
Operating Profit (Loss):
Operating Profit (Loss)	1,070,000	400,000	4,200,000	520,000
Depreciation and Amortization Expense:
Depreciation and Amortization Expense	50,000	70,000	160,000	200,000
Interest Expense:
Interest Expense	0	0	0	0
Income Tax Expense (Benefits):
Income Tax Expense (benefits)	0	0	0	0
Total Assets:
Total assets	28,630,000		28,630,000		23,660,000
Long-Lived Assets:
Long-Lived Assets	2,390,000		2,390,000		2,550,000
Other foreign [Member]
Net Sales:
Net sales	5,360,000	5,990,000	17,480,000	16,440,000
External Sales:
Revenue from External Customers	5,140,000	5,690,000	16,020,000	15,910,000
Intersegment Sales:
Intersegment Revenue	210,000	300,000	1,500,000	530,000
Operating Profit (Loss):
Operating Profit (Loss)	60,000	420,000	560,000	910,000
Depreciation and Amortization Expense:
Depreciation and Amortization Expense	40,000	30,000	140,000	130,000
Interest Expense:
Interest Expense	40,000	40,000	120,000	120,000
Income Tax Expense (Benefits):
Income Tax Expense (benefits)	170,000	20,000	330,000	130,000
Total Assets:
Total assets	19,930,000		19,930,000		13,190,000
Long-Lived Assets:
Long-Lived Assets	2,250,000		2,250,000		2,380,000
Mexico [Member]
Net Sales:
Net sales	900,000	690,000	2,350,000	1,750,000
External Sales:
Revenue from External Customers	380,000	240,000	880,000	500,000
Intersegment Sales:
Intersegment Revenue	520,000	450,000	1,470,000	1,250,000
Operating Profit (Loss):
Operating Profit (Loss)	40,000	10,000	(30,000)	(50,000)
Depreciation and Amortization Expense:
Depreciation and Amortization Expense	10,000	10,000	40,000	30,000
Interest Expense:
Interest Expense	30,000	10,000	70,000	40,000
Income Tax Expense (Benefits):
Income Tax Expense (benefits)	0	0	10,000	10,000
Total Assets:
Total assets	3,690,000		3,690,000		3,590,000
Long-Lived Assets:
Long-Lived Assets	2,110,000		2,110,000		2,210,000
China [Member]
Net Sales:
Net sales	11,170,000	9,530,000	32,530,000	27,790,000
External Sales:
Revenue from External Customers	3,900,000	4,200,000	11,290,000	12,450,000
Intersegment Sales:
Intersegment Revenue	7,270,000	5,330,000	21,240,000	15,340,000
Operating Profit (Loss):
Operating Profit (Loss)	1,060,000	1,010,000	2,650,000	2,150,000
Depreciation and Amortization Expense:
Depreciation and Amortization Expense	80,000	90,000	200,000	260,000
Income Tax Expense (Benefits):
Income Tax Expense (benefits)	250,000	30,000	730,000	400,000
Total Assets:
Total assets	26,160,000		26,160,000		26,660,000
Long-Lived Assets:
Long-Lived Assets	2,630,000		2,630,000		3,280,000
Brazil [Member]
Net Sales:
Net sales	1,910,000	4,280,000	5,400,000	14,170,000
External Sales:
Revenue from External Customers	1,900,000	4,280,000	5,320,000	14,170,000
Intersegment Sales:
Intersegment Revenue	20,000	0	80,000	0
Operating Profit (Loss):
Operating Profit (Loss)	(1,930,000)	(370,000)	(3,740,000)	(240,000)
Depreciation and Amortization Expense:
Depreciation and Amortization Expense	90,000	90,000	280,000	270,000
Interest Expense:
Interest Expense	340,000	240,000	870,000	760,000
Income Tax Expense (Benefits):
Income Tax Expense (benefits)	0	(140,000)	0	(430,000)
Total Assets:
Total assets	8,650,000		8,650,000		14,140,000
Long-Lived Assets:
Long-Lived Assets	2,210,000		2,210,000		2,750,000
Corporate [Member]
Net Sales:
Net sales	370,000	140,000	1,500,000	530,000
Intersegment Sales:
Intersegment Revenue	370,000	140,000	1,460,000	530,000
Operating Profit (Loss):
Operating Profit (Loss)	(1,250,000)	(1,250,000)	(3,610,000)	(3,620,000)
Depreciation and Amortization Expense:
Depreciation and Amortization Expense	190,000	90,000	420,000	240,000
Interest Expense:
Interest Expense	330,000	170,000	740,000	410,000
Income Tax Expense (Benefits):
Income Tax Expense (benefits)	(40,000)	(320,000)	(3,910,000)	(1,060,000)
Total Assets:
Total assets	1,400,000		1,400,000		470,000
Long-Lived Assets:
Long-Lived Assets	970,000		970,000		920,000
Intersegment Elimination [Member]
Intersegment Sales:
Intersegment Revenue	(9,320,000)	(6,970,000)	(27,700,000)	(19,730,000)
Operating Profit (Loss):
Operating Profit (Loss)	(80,000)	50,000	0	770,000
Depreciation and Amortization Expense:
Depreciation and Amortization Expense	(10,000)	0	(10,000)	0
Interest Expense:
Interest Expense	(90,000)	(190,000)	(410,000)	(560,000)
Income Tax Expense (Benefits):
Income Tax Expense (benefits)	(50,000)	110,000	(260,000)	280,000
India [Member]
Total Assets:
Total assets	(1,120,000)		(1,120,000)		1,610,000
Long-Lived Assets:
Long-Lived Assets	$ 20,000		$ 20,000		$ 0