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Note 4 - Property and Equipment, Net (Details Textual) |  | 12 Months Ended
--- | --- | ---
Feb. 28, 2023 USD ($) ft² | Aug. 31, 2023 USD ($) | Aug. 31, 2022 USD ($)
Payments to Acquire Property, Plant, and Equipment |  | $ 3,247,652 | $ 1,496,674
Depreciation expense |  | $ 1,042,505 | $ 938,489
Property Immediately Adjacent to NTIC’s Headquarters in Circle Pines, Minnesota [Member] |  |  |
Area of Real Estate Property | ft² | 26,000 |  |
Payments to Acquire Property, Plant, and Equipment | $ 1,200,000 |  |

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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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