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Note 6 - Investments in Joint Ventures (Tables) | 3 Months Ended
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Nov. 30, 2020
Notes Tables |
Condensed Balance Sheet [Table Text Block] |
|  | As of November 30, 20 20 |
|  | Total |  |  | EXCOR |  |  | All Other |
Current assets |  | $ | 61,457,250 |  |  | $ | 28,660,652 |  |  | $ | 32,796,598 |
Total assets |  |  | 65,569,012 |  |  |  | 31,051,037 |  |  |  | 34,517,975 |
Current liabilities |  |  | 14,569,061 |  |  |  | 2,997,769 |  |  |  | 11,571,292 |
Noncurrent liabilities |  |  | 331,743 |  |  |  | — |  |  |  | 331,743 |
Joint ventures’ equity |  |  | 50,668,208 |  |  |  | 28,053,268 |  |  |  | 22,614,940 |
Northern Technologies International Corporation’s share of joint ventures’ equity |  |  | 24,961,205 |  |  |  | 14,026,636 |  |  |  | 10,934,569 |
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings |  |  | 22,726,127 |  |  |  | 13,995,731 |  |  |  | 8,730,396 |
|  | As of August 31, 20 20 |
|  | Total |  |  | EXCOR |  |  | All Other |
Current assets |  | $ | 55,825,418 |  |  | $ | 25,742,619 |  |  | $ | 30,082,799 |
Total assets |  |  | 60,295,587 |  |  |  | 28,449,772 |  |  |  | 31,845,815 |
Current liabilities |  |  | 11,002,867 |  |  |  | 2,424,565 |  |  |  | 8,578,302 |
Noncurrent liabilities |  |  | 365,274 |  |  |  | — |  |  |  | 365,274 |
Joint ventures’ equity |  |  | 48,927,446 |  |  |  | 26,025,207 |  |  |  | 22,902,239 |
Northern Technologies International Corporation’s share of joint ventures’ equity |  |  | 24,090,826 |  |  |  | 13,012,606 |  |  |  | 11,078,220 |
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings |  |  | 21,855,747 |  |  |  | 12,981,701 |  |  |  | 8,874,046 |
Condensed Income Statement [Table Text Block] |
|  | Three Months Ended November 30, 20 20 |
|  | Total |  |  | EXCOR |  |  | All Other |
Net sales |  | $ | 26,777,343 |  |  | $ | 9,551,483 |  |  | $ | 17,225,860 |
Gross profit |  |  | 12,441,761 |  |  |  | 5,699,007 |  |  |  | 6,742,754 |
Net income |  |  | 3,651,424 |  |  |  | 2,021,074 |  |  |  | 1,630,350 |
Northern Technologies International Corporation’s share of equity in income from joint ventures |  |  | 1,825,712 |  |  |  | 1,010,537 |  |  |  | 815,175 |
Northern Technologies International Corporation's dividends received from joint ventures |  | $ | 1,125,361 |  |  |  | — |  |  | $ | 1,125,361 |
|  | Three Months Ended November 30, 201 9 |
|  | Total |  |  | EXCOR |  |  | All Other |
Net sales |  | $ | 25,460,294 |  |  | $ | 9,368,239 |  |  | $ | 16,092,055 |
Gross profit |  |  | 11,357,134 |  |  |  | 5,325,488 |  |  |  | 6,031,646 |
Net income |  |  | 2,587,980 |  |  |  | 1,642,327 |  |  |  | 945,653 |
Northern Technologies International Corporation’s share of equity in income from joint ventures |  |  | 1,293,990 |  |  |  | 821,163 |  |  |  | 472,827 |
Northern Technologies International Corporation's dividends received from joint ventures |  | $ | 205,432 |  |  |  | — |  |  | $ | 205,432 |

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