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Note 7 - Investments in Joint Ventures - Condensed Balance Sheet of EXCOR and All Other Joint Ventures (Details) - USD ($)
Feb. 28, 2025
Aug. 31, 2024
Current assets $ 39,624,812 $ 41,579,219
Total assets 93,695,214 94,676,502
Current liabilities 18,208,386 17,896,943
Non-current liabilities 1,641,149 1,604,238
Joint ventures’ equity 69,745,653 71,193,991
Investments in joint ventures 25,041,302 25,397,287
EXCOR and All Other Joint Venturs [Member]    
Investments in joint ventures 25,041,302 25,397,287
NTIC’s share of joint ventures’ undistributed earnings 24,096,958 23,645,685
EXCOR [Member]    
Investments in joint ventures 14,644,808 14,645,783
NTIC’s share of joint ventures’ undistributed earnings 14,613,903 14,614,878
All Other [Member]    
Investments in joint ventures 10,396,494 10,751,504
NTIC’s share of joint ventures’ undistributed earnings 9,483,055 9,030,807
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]    
Current assets 53,214,235 56,420,503
Total assets 62,156,803 64,183,071
Current liabilities 11,098,084 12,553,716
Non-current liabilities 464,499 323,199
Joint ventures’ equity 50,594,220 51,306,156
EXCOR [Member]    
Current assets 24,676,444 26,234,664
Total assets 31,200,159 31,513,288
Current liabilities 1,910,547 2,221,726
Non-current liabilities 0 0
Joint ventures’ equity 29,289,612 29,291,562
Joint Ventures in France [Member]    
Current assets   30,185,839
Total assets   32,669,783
Current liabilities   10,331,990
Non-current liabilities   323,199
Joint ventures’ equity   $ 22,014,594
All Other [Member]    
Current assets 28,537,791  
Total assets 30,956,644  
Current liabilities 9,187,537  
Non-current liabilities 464,499  
Joint ventures’ equity $ 21,304,608