MANUFACTURING SEGMENT DATA (Details 1) (USD $)	3 Months Ended								12 Months Ended
	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Net Sales from Continuing Operations:
Net sales from continuing operations	$ 23,399,000	$ 24,239,000	$ 23,499,000	$ 23,981,000	$ 20,165,000	$ 24,744,000	$ 25,833,000	$ 25,585,000	$ 95,117,539	$ 96,326,989
External Sales from Continuing Operations:
Revenue from External Customers									95,120,000	96,330,000
Intersegment Sales from Continuing Operations:
Segment Reporting Information, Intersegment Revenue									(26,940,000)	(22,310,000)
Operating Profit (Loss) from Continuing Operations:
Operating profit from continuing operations									(1,030,168)	1,742,193
Interest Expense from Continuing Operations:
Interest expense									913,446	679,086
Income Tax Expense from Continuing Operations:
Provision (benefit) for income taxes on continuing operations									5,035,764	(254,319)
Depreciation and Amortization Expense:
Depreciation and amortization									1,550,865	1,939,469
Total Assets (at Balance Sheet Date):
Total assets	83,318,003				102,404,854				83,318,003	102,404,854
Property and Equipment (at Balance Sheet Date):
Long-Lived Assets	14,090,000				13,910,000				14,090,000	13,910,000
Goodwill
Goodwill	871,297				6,132,954				871,297	6,132,954	6,297,751
Usa [Member]
Net Sales from Continuing Operations:
Net sales from continuing operations									43,880,000	54,320,000
External Sales from Continuing Operations:
Revenue from External Customers									40,760,000	50,560,000
Intersegment Sales from Continuing Operations:
Segment Reporting Information, Intersegment Revenue									(3,120,000)	(3,760,000)
Operating Profit (Loss) from Continuing Operations:
Operating profit from continuing operations									(3,550,000)	(1,800,000)
Interest Expense from Continuing Operations:
Interest expense									490,000	370,000
Income Tax Expense from Continuing Operations:
Provision (benefit) for income taxes on continuing operations									3,260,000	(470,000)
Depreciation and Amortization Expense:
Depreciation and amortization									650,000	660,000
Total Assets (at Balance Sheet Date):
Total assets	24,140,000				34,490,000				24,140,000	34,490,000
Property and Equipment (at Balance Sheet Date):
Long-Lived Assets	3,470,000				3,930,000				3,470,000	3,930,000
Goodwill
Goodwill	870,000				870,000				870,000	870,000
Other foreign [Member]
Net Sales from Continuing Operations:
Net sales from continuing operations									21,140,000	16,730,000
External Sales from Continuing Operations:
Revenue from External Customers									20,580,000	16,320,000
Intersegment Sales from Continuing Operations:
Segment Reporting Information, Intersegment Revenue									(560,000)	(410,000)
Operating Profit (Loss) from Continuing Operations:
Operating profit from continuing operations									710,000	690,000
Interest Expense from Continuing Operations:
Interest expense									140,000	220,000
Income Tax Expense from Continuing Operations:
Provision (benefit) for income taxes on continuing operations									120,000	200,000
Depreciation and Amortization Expense:
Depreciation and amortization									170,000	140,000
Total Assets (at Balance Sheet Date):
Total assets	13,190,000				12,130,000				13,190,000	12,130,000
Property and Equipment (at Balance Sheet Date):
Long-Lived Assets	2,380,000				2,480,000				2,380,000	2,480,000
Goodwill
Goodwill	0				0				0	0
Mexico [Member]
Net Sales from Continuing Operations:
Net sales from continuing operations									2,380,000	1,880,000
External Sales from Continuing Operations:
Revenue from External Customers									730,000	180,000
Intersegment Sales from Continuing Operations:
Segment Reporting Information, Intersegment Revenue									(1,650,000)	(1,700,000)
Operating Profit (Loss) from Continuing Operations:
Operating profit from continuing operations									(40,000)	(150,000)
Interest Expense from Continuing Operations:
Interest expense									50,000	0
Income Tax Expense from Continuing Operations:
Provision (benefit) for income taxes on continuing operations									10,000	(70,000)
Depreciation and Amortization Expense:
Depreciation and amortization									40,000	10,000
Total Assets (at Balance Sheet Date):
Total assets	3,580,000				3,260,000				3,580,000	3,260,000
Property and Equipment (at Balance Sheet Date):
Long-Lived Assets	2,210,000				1,910,000				2,210,000	1,910,000
Goodwill
Goodwill	0				0				0	0
China [Member]
Net Sales from Continuing Operations:
Net sales from continuing operations									37,800,000	30,010,000
External Sales from Continuing Operations:
Revenue from External Customers									16,190,000	13,570,000
Intersegment Sales from Continuing Operations:
Segment Reporting Information, Intersegment Revenue									(21,610,000)	(16,440,000)
Operating Profit (Loss) from Continuing Operations:
Operating profit from continuing operations									2,880,000	2,530,000
Interest Expense from Continuing Operations:
Interest expense									0	0
Income Tax Expense from Continuing Operations:
Provision (benefit) for income taxes on continuing operations									560,000	680,000
Depreciation and Amortization Expense:
Depreciation and amortization									330,000	320,000
Total Assets (at Balance Sheet Date):
Total assets	26,660,000				22,500,000				26,660,000	22,500,000
Property and Equipment (at Balance Sheet Date):
Long-Lived Assets	3,280,000				2,450,000				3,280,000	2,450,000
Goodwill
Goodwill	0				0				0	0
Brazil [Member]
Net Sales from Continuing Operations:
Net sales from continuing operations									16,860,000	15,700,000
External Sales from Continuing Operations:
Revenue from External Customers									16,860,000	15,700,000
Intersegment Sales from Continuing Operations:
Segment Reporting Information, Intersegment Revenue									0	0
Operating Profit (Loss) from Continuing Operations:
Operating profit from continuing operations									(1,610,000)	(180,000)
Interest Expense from Continuing Operations:
Interest expense									970,000	400,000
Income Tax Expense from Continuing Operations:
Provision (benefit) for income taxes on continuing operations									910,000	(400,000)
Depreciation and Amortization Expense:
Depreciation and amortization									360,000	470,000
Total Assets (at Balance Sheet Date):
Total assets	14,140,000				28,020,000				14,140,000	28,020,000
Property and Equipment (at Balance Sheet Date):
Long-Lived Assets	2,750,000				3,140,000				2,750,000	3,140,000
Goodwill
Goodwill	0				5,260,000				0	5,260,000
India [Member]
Depreciation and Amortization Expense:
Depreciation and amortization									0	340,000
Total Assets (at Balance Sheet Date):
Total assets	1,610,000				2,000,000				1,610,000	2,000,000
Property and Equipment (at Balance Sheet Date):
Long-Lived Assets	0				0				0	0
Goodwill
Goodwill	0				0				0	0
Intersegment Elimination [Member]
Operating Profit (Loss) from Continuing Operations:
Operating profit from continuing operations									580,000	650,000
Interest Expense from Continuing Operations:
Interest expense									(740,000)	(310,000)
Income Tax Expense from Continuing Operations:
Provision (benefit) for income taxes on continuing operations									$ 180,000	$ (190,000)