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v3.23.1

Note 4 - Property and Equipment, Net (Details Textual) |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Feb. 28, 2023 USD ($) ft² | Feb. 28, 2023 USD ($) ft² | Feb. 28, 2022 USD ($) | Feb. 28, 2023 USD ($) ft² | Feb. 28, 2022 USD ($)
Payments to Acquire Property, Plant, and Equipment, Total |  |  |  | $ 1,871,903 | $ 618,533
Depreciation, Total |  | $ 225,962 | $ 215,685 | 488,838 | 430,991
Depreciation expense |  | $ 225,962 | $ 215,685 | $ 488,838 | $ 430,991
Property Immediately Adjacent to NTIC’s Headquarters in Circle Pines, Minnesota [Member] |  |  |  |  |
Area of Real Estate Property | ft² | 26,000 | 26,000 |  | 26,000 |
Payments to Acquire Property, Plant, and Equipment, Total | $ 1,200,000 |  |  |  |

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