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Note 15 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2025	Feb. 29, 2024
Foreign Withholding Tax	$ 275,197	$ 289,195	$ 493,068	$ 515,991

X

- Definition

The amount of foreign withholding tax.

+ References

No definition available.

+ Details

Name:	ntic_ForeignWithholdingTax
Namespace Prefix:	ntic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration