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Note 15 - Income Taxes - Provision for Income Taxes (Details) - USD ($)
12 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Current:    
Federal
State 62,000 20,000
Foreign 754,000 647,000
Total current 816,000 667,000
Deferred:    
Federal (135,000) 6,000
State (9,000)
Foreign 28,000 (47,000)
Total deferred (116,000) (41,000)
Total income tax expense $ 699,519 $ 626,120