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Consolidated Statements of Cash Flows - USD ($)
12 Months Ended
Aug. 31, 2016
Aug. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net (loss) income $ (1,198,302) $ 2,517,360
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:    
Stock-based compensation 427,437 495,683
Depreciation expense 660,008 530,449
Amortization 119,032 87,663
Loss on disposal of assets 20,689
Equity in income from joint ventures (4,743,831) (5,936,565)
Dividends received from joint ventures 5,503,314 2,983,338
Impairment on investment at carrying value 1,883,668
Deferred income taxes (47,000) 131,777
Gain on sale of equipment 31,708
Receivables:    
Trade, excluding joint ventures (723,798) (699,088)
Trade, joint ventures (146,526) 305,909
Fees for services provided to joint ventures 42,575 1,163,737
Income taxes (40,859) (258,329)
Inventories (257,826) (1,679,654)
Prepaid expenses and other 17,023 25,028
Accounts payable 641,631 127,907
Income tax payable 42,984 31,667
Accrued liabilities (123,924) (634,823)
Net cash provided by (used in) operating activities 2,055,606 (755,544)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Additions to property and equipment (643,407) (1,438,919)
Purchase of available for sale securities (216,423)
Proceeds from sale of available for sale securities 3,492,325
Additions to patents (135,410) (152,182)
Net cash (used in) provided by investing activities (995,240) 1,901,224
CASH FLOWS FROM FINANCING ACTIVITIES:    
Dividend received by non-controlling interest (200,000) (1,160,000)
Investment by non-controlling interest 15,625
Repurchase of common stock (138,881) (24,346)
Proceeds from employee stock purchase plan 68,634 57,981
Proceeds from exercise of stock options 236,089
Net cash used in financing activities (270,247) (874,651)
EFFECT OF EXCHANGE RATE CHANGES ON CASH: (18,826) (124,065)
NET INCREASE IN CASH AND CASH EQUIVALENTS 771,293 146,964
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR 2,623,981 2,477,017
CASH AND CASH EQUIVALENTS AT END OF YEAR $ 3,395,274 $ 2,623,981