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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