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Note 14 - Income Taxes - Tax Effect of the Temporary Differences and Tax Carry Forwards Comprising Net Deferred Taxes (Details) - USD ($)
Aug. 31, 2018
Aug. 31, 2017
Accrued compensation $ 430,600 $ 310,300
Inventory costs 58,900 87,000
Accrued joint venture expenses 15,200
Other accrued expenses 63,700 74,000
Goodwill and other intangible assets 695,800 1,317,700
Stock-based compensation 197,500 241,600
Foreign tax credit carryforward 5,789,600 6,105,700
Other credit and loss carryforwards 3,241,200 3,473,100
Total deferred tax assets 10,477,300 11,624,600
Valuation allowance (8,654,500) (9,578,700)
Total deferred tax assets after valuation allowance 1,822,800 2,045,900
Property and equipment (124,600) (206,000)
Other (146,200) (83,300)
Total deferred tax liabilities (270,800) (289,300)
Net deferred tax assets $ 1,552,000 $ 1,756,600