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Note 7 - Investments in Joint Ventures (Tables) | 3 Months Ended
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Nov. 30, 2021
Notes Tables |
Condensed Balance Sheet [Table Text Block] |
|  | As of November 30, 2021 |
|  | Total |  |  | EXCOR |  |  | All Other |
Current assets |  | $ | 54,945,793 |  |  | $ | 25,127,390 |  |  | $ | 29,818,403 |
Total assets |  |  | 58,833,491 |  |  |  | 27,282,965 |  |  |  | 31,550,526 |
Current liabilities |  |  | 14,079,093 |  |  |  | 4,139,822 |  |  |  | 9,939,271 |
Noncurrent liabilities |  |  | 1,288,670 |  |  |  | - |  |  |  | 1,288,670 |
Joint ventures’ equity |  |  | 43,465,728 |  |  |  | 23,143,143 |  |  |  | 20,322,585 |
Northern Technologies International Corporation’s share of joint ventures’ equity |  |  | 21,357,911 |  |  |  | 11,571,573 |  |  |  | 9,786,338 |
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings |  |  | 19,142,941 |  |  |  | 11,540,668 |  |  |  | 7,602,273 |
|  | As of August 31, 2021 |
|  | Total |  |  | EXCOR |  |  | All Other(1) |
Current assets |  | $ | 69,394,796 |  |  | $ | 33,886,655 |  |  | $ | 35,508,141 |
Total assets |  |  | 73,814,402 |  |  |  | 36,211,520 |  |  |  | 37,602,882 |
Current liabilities |  |  | 16,366,398 |  |  |  | 5,386,377 |  |  |  | 10,980,021 |
Noncurrent liabilities |  |  | 1,455,524 |  |  |  | — |  |  |  | 1,455,524 |
Joint ventures’ equity |  |  | 55,992,480 |  |  |  | 30,825,144 |  |  |  | 25,167,336 |
Northern Technologies International Corporation’s share of joint ventures’ equity |  |  | 27,623,768 |  |  |  | 15,412,574 |  |  |  | 12,211,194 |
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings |  |  | 24,702,778 |  |  |  | 14,697,490 |  |  |  | 10,005,288 |
Condensed Income Statement [Table Text Block] |
|  | Three Months Ended November 30, 2021 |
|  | Total |  |  | EXCOR |  |  | All Other |
Net sales |  | $ | 27,022,995 |  |  | $ | 11,300,228 |  |  | $ | 15,722,767 |
Gross profit |  |  | 11,032,959 |  |  |  | 5,468,986 |  |  |  | 5,563,973 |
Net income |  |  | 2,777,605 |  |  |  | 1,821,547 |  |  |  | 956,058 |
Northern Technologies International Corporation’s share of equity in income from joint ventures |  |  | 1,374,749 |  |  |  | 910,773 |  |  |  | 463,976 |
Northern Technologies International Corporation's dividends received from joint ventures |  |  | 5,042,271 |  |  |  | 4,255,200 |  |  |  | 787,071 |
|  | Three Months Ended November 30, 2020 |
|  | Total |  |  | EXCOR |  |  | All Other(1) |
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 |

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