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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
9 Months Ended
May 31, 2018
May 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income $ 4,924,231 $ 2,387,391
Adjustments to reconcile net income to net cash (used in) provided by operating activities:    
Stock-based compensation 309,743 293,748
Depreciation expense 631,399 580,962
Amortization expense 188,460 89,274
Gain on disposal of assets (11,662)
Equity in income from joint ventures (5,793,391) (4,343,159)
Dividends received from joint ventures 2,941,807 5,179,786
Deferred income taxes 700,000 24,939
Changes in current assets and liabilities:    
Trade, excluding joint ventures (2,827,606) (1,442,714)
Trade, joint ventures 93,947 (503,863)
Fees for services provided to joint ventures (49,305) 181,610
Income taxes (267,131) (154,171)
Inventories (1,773,085) (155,011)
Prepaid expenses and other (718,839) 19,197
Accounts payable 728,657 816,845
Income tax payable 104,643 (3,466)
Accrued liabilities 676,138 (145,202)
Net cash (used in) provided by operating activities (141,994) 2,826,166
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchase of available for sale securities (1,018,596) (3,013,572)
Proceeds from the sale of available for sale securities 1,502,665 1,500,756
Additions to property and equipment (500,924) (760,847)
Additions to patents (62,594) (124,780)
Net cash used in investing activities (79,449) (2,398,443)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Dividend received by non-controlling interest (200,000) (200,000)
Repurchase of common stock (196,164)
Dividends paid on NTIC common stock (1,361,382)
Proceeds from employee stock purchase plan 27,951 46,475
Proceeds from option exercises 15,433 41,000
Net cash used in financing activities (1,517,998) (308,689)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS: (10,435) (14,144)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS (1,749,876) 104,890
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 6,360,201 3,395,274
CASH AND CASH EQUIVALENTS AT END OF PERIOD $ 4,610,325 $ 3,500,164