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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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May 31, 2012
Schedule of Inventory, Current [Table Text Block] |
|  | 2012 |  | 2011
Raw materials | $ | 896,000 | $ | 737,000
Work in progress |  | 554,000 |  | 718,000
Finished products |  | 371,000 |  | 331,000
Total | $ | 1,821,000 | $ | 1,786,000
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | 2012 |  | 2011
Dividend yield |  | 0% |  | 0%
Expected volatility |  | 77.76-84.97% |  | 85.97-86.42%
Risk free interest rate |  | 0.63-0.76% |  | 1.87-2.27%
Expected life |  | 3.25-3.75 years |  | 3.75 years
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
For the Years Ended May 31 |  | 2012 |  | 2011
Numerator for basic and diluted net income per common share | $ | 548,435 | $ | 157,447
Denominator for basic net income per common share |  | 6,887,929 |  | 6,668,229
Effect of dilutive securities: |  |  |  |
| Options and warrants |  | 219,830 |  | 36,078
Denominator for diluted net income per common share |  | 7,107,759 |  | 6,704,307
Basic net income per common share | $ | 0.08 | $ | 0.02
Diluted net income per common share | $ | 0.08 | $ | 0.02

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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