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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, 2019 | Aug. 31, 2018
--- | --- | ---
Accrued compensation | $ 153,400 | $ 430,600
Inventory costs | 60,900 | 58,900
Other accrued expenses | 39,700 | 63,700
Goodwill and other intangible assets | 688,400 | 695,800
Stock-based compensation | 299,300 | 197,500
Foreign tax credit carryforward | 5,790,500 | 5,789,600
Other credit and loss carryforwards | 3,631,700 | 3,241,200
Total deferred tax assets | 10,683,900 | 10,477,300
Valuation allowance | (8,764,300) | (8,654,500)
Total deferred tax assets after valuation allowance | 1,899,600 | 1,822,800
Property and equipment | (111,900) | (124,600)
Other | (153,400) | (146,200)
Total deferred tax liabilities | (265,300) | (270,800)
Net deferred tax assets | $ 1,634,300 | $ 1,552,000

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