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Note 7 - Investments in Joint Ventures (Tables) | 6 Months Ended
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Feb. 28, 2022
Notes Tables |
Condensed Balance Sheet [Table Text Block] |
|  | As of February 28, 2022 |
|  | Total |  |  | EXCOR |  |  | All Other |
Current assets |  | $ | 55,032,109 |  |  | $ | 25,447,104 |  |  | $ | 29,585,005 |
Total assets |  |  | 58,525,731 |  |  |  | 27,186,903 |  |  |  | 31,338,828 |
Current liabilities |  |  | 12,803,351 |  |  |  | 3,004,495 |  |  |  | 9,798,856 |
Noncurrent liabilities |  |  | 1,268,334 |  |  |  | - |  |  |  | 1,268,334 |
Joint ventures’ equity |  |  | 44,454,046 |  |  |  | 24,182,408 |  |  |  | 20,271,638 |
Northern Technologies International Corporation’s share of joint ventures’ equity |  |  | 21,852,070 |  |  |  | 12,091,206 |  |  |  | 9,760,864 |
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings |  |  | 20,501,921 |  |  |  | 12,060,301 |  |  |  | 8,441,621 |
|  | 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 February 28, 2022 |
|  | Total |  |  | EXCOR |  |  | All Other |
Net sales |  | $ | 24,601,767 |  |  | $ | 9,312,434 |  |  | $ | 15,289,334 |
Gross profit |  |  | 9,845,002 |  |  |  | 4,658,450 |  |  |  | 5,186,553 |
Net income |  |  | 1,851,591 |  |  |  | 1,170,187 |  |  |  | 681,404 |
Northern Technologies International Corporation’s share of equity in income from joint ventures |  |  | 922,832 |  |  |  | 589,048 |  |  |  | 333,784 |
Northern Technologies International Corporation's dividends received from joint ventures |  |  | 320,365 |  |  |  | — |  |  |  | 320,365 |
|  | Six Months Ended February 28, 2022 |
|  | Total |  |  | EXCOR |  |  | All Other |
Net sales |  | $ | 51,624,762 |  |  | $ | 20,612,662 |  |  | $ | 31,012,100 |
Gross profit |  |  | 20,877,961 |  |  |  | 10,127,436 |  |  |  | 10,750,525 |
Net income |  |  | 4,629,196 |  |  |  | 2,991,734 |  |  |  | 1,637,462 |
Northern Technologies International Corporation’s share of equity in income from joint ventures |  |  | 2,297,581 |  |  |  | 1,499,821 |  |  |  | 797,760 |
Northern Technologies International Corporation's dividends received from joint ventures |  |  | 5,362,636 |  |  |  | 4,255,200 |  |  |  | 1,107,436 |
|  | Three Months Ended February 28, 2021 |
|  | Total |  |  | EXCOR |  |  | All Other(1) |
Net sales |  | $ | 29,058,402 |  |  | $ | 10,542,097 |  |  | $ | 18,516,306 |
Gross profit |  |  | 13,079,478 |  |  |  | 6,099,187 |  |  |  | 6,980,291 |
Net income |  |  | 3,838,007 |  |  |  | 2,262,321 |  |  |  | 1,575,686 |
Northern Technologies International Corporation’s share of equity in income from joint ventures |  |  | 1,920,012 |  |  |  | 1,132,578 |  |  |  | 787,434 |
Northern Technologies International Corporation's dividends received from joint ventures |  |  | 2,198,142 |  |  |  | 1,809,900 |  |  |  | 388,242 |
|  | Six Months Ended February 28, 2021 |
|  | Total |  |  | EXCOR |  |  | All Other(1) |
Net sales |  | $ | 55,835,745 |  |  | $ | 20,093,580 |  |  | $ | 35,742,165 |
Gross profit |  |  | 25,521,239 |  |  |  | 11,798,194 |  |  |  | 13,723,045 |
Net income |  |  | 7,489,431 |  |  |  | 4,283,395 |  |  |  | 3,206,036 |
Northern Technologies International Corporation’s share of equity in income from joint ventures |  |  | 3,745,724 |  |  |  | 2,143,115 |  |  |  | 1,602,609 |
Northern Technologies International Corporation's dividends received from joint ventures |  |  | 3,323,503 |  |  |  | 1,809,900 |  |  |  | 1,513,603 |

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