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Note 1 - Nature of Business and Significant Accounting Policies (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Property and Equipment Useful Life [Table Text Block]

Buildings and improvements	5-30 years
Machinery and equipment	3-10 years

X

- Definition

Tabular disclosure of property and equipment useful life.

+ References

No definition available.

+ Details

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Namespace Prefix:	ntic_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_TableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration