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MANUFACTURING SEGMENT DATA (Details) (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
Sales Revenue, Net | $ 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
Sales Revenue, Percentage | 100.00% |  |  |  | 100.00% |  |  |  | 100.00% | 100.00%
Domestic [Member] |  |  |  |  |  |  |  |  |  |
Sales Revenue, Net |  |  |  |  |  |  |  |  | 40,760,000 | 50,560,000
Sales Revenue, Percentage | 42.85% |  |  |  | 52.49% |  |  |  | 42.85% | 52.49%
International [Member] |  |  |  |  |  |  |  |  |  |
Sales Revenue, Net |  |  |  |  |  |  |  |  | $ 54,360,000 | $ 45,770,000
Sales Revenue, Percentage | 57.15% |  |  |  | 47.51% |  |  |  | 57.15% | 47.51%

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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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- Definition The percentage of net product revenue to total net revenue from the sale of goods as of year end. + References No definition available. + Details
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