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Note 15 - Income Taxes - Tax Effect of the Temporary Differences and Tax Carry Forwards Comprising Net Deferred Taxes (Details) - USD ($) | Aug. 31, 2016 | Aug. 31, 2015
--- | --- | ---
Accrued compensation | $ 150,600 | $ 237,700
Inventory costs | 95,300 | 81,200
Accrued joint venture expenses | 54,200 | 93,200
Other accrued expenses | 87,000 | 53,800
Goodwill and other intangible assets | 1,332,000 | 1,123,200
Stock-based compensation | 210,600 | 308,900
Foreign tax credit carryforward | 5,679,000 | 4,654,800
Other credit and loss carryforwards | 3,214,300 | 2,262,000
Total deferred tax assets | 10,823,000 | 8,814,800
Valuation allowance | (8,893,300) | (6,889,900)
Total deferred tax assets after valuation allowance | 1,929,700 | 1,924,900
Property and equipment | (215,600) | (204,000)
Other | (74,300) | (120,800)
Total deferred tax liabilities | (289,900) | (324,800)
Net deferred tax assets | $ 1,639,800 | $ 1,600,100

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