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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
9 Months Ended
May 31, 2020
May 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income $ 710,837 $ 4,834,211
Adjustments to reconcile net income to net cash provided by operating activities:    
Stock-based compensation 998,122 1,073,940
Depreciation expense 637,030 627,853
Amortization expense 175,465 195,230
Loss on disposal of property and equipment and patents 173,809
Equity in income from joint ventures (3,466,581) (5,596,788)
Dividends received from joint ventures 5,648,153 3,822,785
Deferred income taxes 109,646 177,916
Gain on sale of property and equipment (36,210)
Changes in current assets and liabilities:    
Trade, excluding joint ventures 2,065,641 (132,122)
Trade, joint ventures (32,904) (174,179)
Fees for services provided to joint ventures 391,880 114,327
Income taxes 174,623 (343,377)
Inventories (1,729,133) (1,465,663)
Prepaid expenses and other 368,769 709,049
Accounts payable (882,962) 495,251
Income tax payable 40,983 (93,169)
Accrued liabilities (2,370,845) (1,491,663)
Net cash provided by operating activities 3,012,533 2,717,391
CASH FLOWS FROM INVESTING ACTIVITIES:    
Proceeds from the sale of property and equipment 2,190
Purchase of available for sale securities (4,000,000) (2,340,503)
Proceeds from the sale of available for sale securities 2,114,565 3,100,000
Purchases of property and equipment (375,087) (716,212)
Investments in patents (79,139) (87,222)
Net cash used in investing activities (2,337,471) (43,937)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Dividend received by non-controlling interest (200,000) (200,000)
Investment by non-controlling interest 134,034
Dividends paid on NTIC common stock (1,182,200) (1,635,183)
Proceeds from employee stock purchase plan 64,195 52,547
Net cash used in financing activities (1,318,005) (1,648,602)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS (163,093) 36,605
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS (806,036) 1,061,457
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 5,856,758 4,163,023
CASH AND CASH EQUIVALENTS AT END OF PERIOD $ 5,050,722 $ 5,224,480