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Note 15 - Income Taxes (Details) - Tax Effect of the Temporary Differences and Tax Carry Forwards Comprising Net Deferred Taxes: (USD $) | Aug. 31, 2013 | Aug. 31, 2012
--- | --- | ---
Current: |  |
Accrued bonus | $ 277,300 | $ 404,100
Allowance for doubtful accounts | 7,200 | 7,200
Inventory costs | 24,600 | 11,900
Prepaid expenses and other | (31,200) | (27,300)
Other accrued expenses | 85,500 | 96,200
Deferred joint venture expenses | 104,100 | 104,000
Total current | 467,500 | 596,100
Noncurrent: |  |
Property and equipment | (165,100) | (159,500)
Goodwill | 35,200 | 43,100
Other intangible assets | 914,000 | 949,200
Nonqualified stock options | 248,500 | 196,100
Foreign tax credit carryforward | 4,253,900 | 3,438,300
Research and development credit | 1,823,200 | 1,485,800
New hire retention credit | 10,600 | 10,700
| 7,120,300 | 5,963,700
Valuation allowance | (6,086,100) | (4,933,100)
Total noncurrent | $ 1,034,200 | $ 1,030,600

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