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Note 6 - Investments in Joint Ventures - Condensed Balance Sheet of EXCOR and All Other Joint Ventures (Details) - USD ($)
May 31, 2024
Aug. 31, 2023
Current assets $ 37,903,269 $ 39,671,556
Total assets 89,265,544 89,344,303
Current liabilities 14,794,433 16,721,372
Noncurrent liabilities 1,897,636 1,924,134
Joint ventures’ equity 68,851,469 66,356,273
Investments in joint ventures 24,219,348 23,705,714
EXCOR and All Other Joint Venturs [Member]    
Investments in joint ventures 24,219,348 23,705,714
NTIC’s share of joint ventures’ undistributed earnings 23,645,685 20,493,861
EXCOR [Member]    
Investments in joint ventures 14,091,586 13,683,608
NTIC’s share of joint ventures’ undistributed earnings 14,260,800 12,075,524
All Other [Member]    
Investments in joint ventures 10,127,762 10,022,106
NTIC’s share of joint ventures’ undistributed earnings 9,384,885 8,418,337
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]    
Current assets 57,436,771 55,339,662
Total assets 62,421,770 59,729,348
Current liabilities 13,167,730 11,464,247
Noncurrent liabilities 303,758 323,762
Joint ventures’ equity 48,949,666 47,941,339
EXCOR [Member]    
Current assets 28,022,725 27,862,458
Total assets 30,641,557 30,054,277
Current liabilities 2,458,389 2,687,064
Noncurrent liabilities 0 0
Joint ventures’ equity 28,183,169 27,367,213
Joint Ventures in France [Member]    
Current assets   27,477,204
Total assets   29,675,071
Current liabilities   8,777,183
Noncurrent liabilities   323,762
Joint ventures’ equity   $ 20,574,126
All Other [Member]    
Current assets 29,414,046  
Total assets 31,780,213  
Current liabilities 10,709,341  
Noncurrent liabilities 303,758  
Joint ventures’ equity $ 20,766,497