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Consolidated Statements of Cash Flows - USD ($)
12 Months Ended
Aug. 31, 2020
Aug. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net (loss) income $ (934,760) $ 5,815,622
Adjustments to reconcile net (loss) income to net cash provided by operating activities:    
Stock-based compensation 1,337,774 1,431,925
Depreciation expense 836,601 841,236
Amortization expense 231,624 261,724
Change in allowance for doubtful accounts 25,000
Equity in income from joint ventures (4,270,327) (7,225,518)
Dividends received from joint ventures 5,672,099 5,039,041
Loss (gain) on disposal of property and patents 173,810 (36,098)
Deferred income taxes 1,424,529 (89,637)
Changes in current assets and liabilities:    
Trade, excluding joint ventures 1,680,611 (50,315)
Trade, joint ventures 348,573 (62,967)
Fees for services provided to joint ventures 340,714 89,255
Income taxes 424,002 (189,226)
Inventories (435,712) (1,486,833)
Prepaid expenses and other 279,312 744,323
Accounts payable (1,229,510) 682,786
Income tax payable 302,641 (65,344)
Accrued liabilities (1,294,911) (222,952)
Net cash provided by operating activities 4,912,070 5,477,022
CASH FLOWS FROM INVESTING ACTIVITIES:    
Proceeds from the sale of property and equipment 2,190
Purchase of available for sale securities (4,000,000) (3,365,146)
Proceeds from the sale of available for sale securities 2,020,536 3,100,000
Purchases of property and equipment (711,412) (960,339)
Investments in patents (95,996) (114,436)
Net cash used in investing activities (2,784,682) (1,339,921)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Dividend received by non-controlling interest (400,000) (400,000)
Investment by non-controlling interest 134,034
Dividends paid on NTIC common stock (1,182,200) (2,180,244)
Proceeds from employee stock purchase plan 64,195 52,546
Proceeds from exercise of stock options
Net cash used in financing activities (1,518,005) (2,393,664)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS (63,109) (49,702)
NET INCREASE IN CASH AND CASH EQUIVALENTS 546,274 1,693,735
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR 5,856,758 4,163,023
CASH AND CASH EQUIVALENTS AT END OF YEAR $ 6,403,032 $ 5,856,758