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Note 17 - Tax Effect of the Temporary Differences and Tax Carry Forwards Comprising Net Deferred Taxes (Details) - USD ($) | Aug. 31, 2015 | Aug. 31, 2014
--- | --- | ---
Accrued bonus | $ 174,000 | $ 524,000
Allowance for doubtful accounts | 14,500 | 14,500
Inventory costs | 81,200 | 100,800
Prepaid expenses and other | (41,800) | (40,600)
Other accrued expenses | 102,100 | 86,800
Deferred joint venture expenses | 93,200 | 104,100
Total current | 424,100 | 789,600
Property and equipment | (204,000) | (171,200)
Goodwill | 19,400 | 27,300
Other intangible assets | 1,103,800 | 825,200
Nonqualified stock options | 308,900 | $ 260,400
Foreign net operating loss carryforward | $ 26,800 |
Deferred Tax Assets, Capital Loss Carryforwards |  | $ 50,900
Deferred Tax Assets, Tax Credit Carryforwards, Foreign | $ 4,654,800 | $ 4,141,100
Investment in foreign joint ventures | (79,000) |
Research and development credit | 2,224,600 | $ 1,910,800
New hire retention credit | 10,600 | 10,600
| 8,065,900 | 7,055,100
Valuation allowance | (6,889,900) | (6,113,400)
Total noncurrent | $ 1,176,000 | $ 941,700

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