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v3.23.3

Note 6 - Investments in Joint Ventures - Condensed Income Statement of EXCOR and All Other Joint Ventures (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Feb. 28, 2023 | Feb. 28, 2022 | Feb. 28, 2023 | Feb. 28, 2022
Net sales | $ 18,270,825 | $ 16,748,639 | $ 38,223,591 | $ 34,942,052
Gross profit | 6,303,068 | 4,984,335 | 12,656,192 | 10,687,265
Net income | 411,497 | 182,847 | 913,739 | 4,676,606
Northern Technologies International Corporation’s share of equity in income from joint ventures | 1,128,731 | 922,832 | 2,318,135 | 2,297,581
EXCOR and All Other Joint Venturs [Member] |  |  |  |
Northern Technologies International Corporation’s share of equity in income from joint ventures | 1,128,731 | 922,832 | 2,318,135 | 2,297,581
Northern Technologies International Corporation's dividends received from joint ventures | 422,048 | 320,365 | 3,464,736 | 5,362,636
EXCOR [Member] |  |  |  |
Northern Technologies International Corporation’s share of equity in income from joint ventures | 676,800 | 589,048 | 1,547,944 | 1,499,821
Northern Technologies International Corporation's dividends received from joint ventures | 0 | 0 | 2,459,500 | 4,255,200
All Other [Member] |  |  |  |
Northern Technologies International Corporation’s share of equity in income from joint ventures | 451,931 | 333,784 | 770,191 | 797,760
Northern Technologies International Corporation's dividends received from joint ventures | 422,048 | 320,365 | 1,005,236 | 1,107,436
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] |  |  |  |
Net sales | 25,482,590 | 24,601,767 | 50,212,879 | 51,624,762
Gross profit | 10,035,811 | 9,845,002 | 19,729,379 | 20,877,961
Net income | 1,969,046 | 1,851,591 | 4,615,954 | 4,629,196
EXCOR [Member] |  |  |  |
Net sales | 9,708,482 | 9,312,434 | 19,854,403 | 20,612,662
Gross profit | 4,733,435 | 4,658,450 | 9,453,477 | 10,127,436
Net income | 1,365,170 | 1,170,187 | 3,107,457 | 2,991,734
All Other [Member] |  |  |  |
Net sales | 15,774,108 |  | 30,358,476 | 31,012,100
Gross profit | 5,302,376 |  | 10,275,902 | 10,750,525
Net income | $ 603,876 |  | $ 1,508,497 | $ 1,637,462
Joint Ventures in France [Member] |  |  |  |
Net sales |  | 15,289,333 |  |
Gross profit |  | 5,186,552 |  |
Net income |  | $ 681,404 |  |

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