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Note 6 - Investments in Joint Ventures - Condensed Balance Sheet of EXCOR and All Other Joint Ventures (Details) - USD ($) | Aug. 31, 2020 | Aug. 31, 2019
--- | --- | ---
Current assets | $ 33,202,350 | $ 33,302,362
Total assets | 66,074,488 | 67,511,087
Current liabilities | 6,097,604 | 7,841,793
Noncurrent liabilities | 272,443 |
Joint ventures’ equity | 56,659,415 | 56,594,615
Investments in joint ventures | 24,090,826 | 24,207,339
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] |  |
Current assets | 55,825,418 | 59,162,834
Total assets | 60,295,587 | 63,326,703
Current liabilities | 11,002,867 | 14,145,499
Noncurrent liabilities | 365,274 | 20,797
Joint ventures’ equity | 48,927,446 | 49,160,407
Investments in joint ventures | 24,090,826 | 24,207,339
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings | 21,855,747 | 22,178,126
EXCOR [Member] |  |
Current assets | 25,742,619 | 29,139,787
Total assets | 28,449,772 | 31,666,841
Current liabilities | 2,424,565 | 3,573,160
Noncurrent liabilities |  |
Joint ventures’ equity | 26,025,207 | 28,093,681
Investments in joint ventures | 13,012,606 | 14,046,842
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings | 12,981,701 | 14,015,937
Joint Ventures in France [Member] |  |
Current assets | 4,099,160 |
Total assets | 4,873,484 |
Current liabilities | 2,073,710 |
Noncurrent liabilities |  |
Joint ventures’ equity | 2,799,774 |
Investments in joint ventures | 1,399,887 |
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings | 1,399,887 |
Joint Ventures in Finland [Member] |  |
Current assets | 1,955,879 |
Total assets | 2,261,147 |
Current liabilities | 415,496 |
Noncurrent liabilities |  |
Joint ventures’ equity | 1,845,651 |
Investments in joint ventures | 922,814 |
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings | 902,814 |
Joint Ventures in India [Member] |  |
Current assets | 4,010,855 |
Total assets | 4,242,660 |
Current liabilities | 1,007,529 |
Noncurrent liabilities | 32,999 |
Joint ventures’ equity | 3,202,132 |
Investments in joint ventures | 1,603,013 |
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings | 738,191 |
Joint Ventures in Thailand [Member] |  |
Current assets | 4,022,399 |
Total assets | 4,055,451 |
Current liabilities | 993,332 |
Noncurrent liabilities |  |
Joint ventures’ equity | 3,062,119 |
Investments in joint ventures | 1,531,060 |
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings | 1,429,060 |
All Other [Member] |  |
Current assets | 15,994,506 | 30,023,047
Total assets | 16,413,073 | 31,659,862
Current liabilities | 4,088,235 | 10,572,339
Noncurrent liabilities | 332,275 | 20,797
Joint ventures’ equity | 11,992,563 | 21,066,726
Investments in joint ventures | 5,621,446 | 10,160,497
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings | $ 4,404,094 | $ 8,162,189

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