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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
6 Months Ended
Feb. 29, 2016
Feb. 28, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net (loss) income $ (143,655) $ 1,405,631
Adjustments to reconcile net (loss) income to net cash used in operating activities:    
Stock-based compensation 223,715 261,159
Depreciation expense 321,437 245,432
Amortization expense $ 59,517 43,833
Loss on disposal of assets 13,847
Equity in income from joint ventures $ (1,936,420) (3,081,332)
Dividends received from joint ventures 4,054,606 2,696,963
Receivables:    
Trade, excluding joint ventures (165,856) (166,033)
Trade, joint ventures (118,640) 166,554
Fees for services provided to joint ventures 242,537 1,128,841
Income taxes (355,200) (300,735)
Inventories 111,146 (102,370)
Prepaid expenses and other (162,301) (127,367)
Accounts payable (174,609) (558,041)
Income tax payable 2,564 14,644
Accrued liabilities (710,031) (1,248,986)
Net cash provided by operating activities $ 1,248,810 392,041
CASH FLOWS FROM INVESTING ACTIVITIES:    
Proceeds from the sale of available for sale securities $ 1,994,781
Purchase of available for sale securities $ (705,638)
Additions to property and equipment (346,872) $ (897,582)
Additions to patents (28,057) (106,707)
Net cash (used in) provided by investing activities (1,080,567) 990,492
CASH FLOWS FROM FINANCING ACTIVITIES:    
Dividend received by non-controlling interest (200,000) $ (560,000)
Repurchase of common stock (70,549)
Proceeds from employee stock purchase plan $ 34,963 $ 22,620
Proceeds from exercise of stock options 99,450
Net cash used in financing activities $ (235,586) (437,930)
EFFECT OF EXCHANGE RATE CHANGES ON CASH: (25,298) (56,231)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS (92,641) 888,372
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 2,623,981 2,477,017
CASH AND CASH EQUIVALENTS AT END OF PERIOD $ 2,531,340 $ 3,365,389