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Note 13 - Segment and Geographic Information - Fees for Services Provided to Joint Ventures by Geographic Location as a Percentage of Total Fees (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Feb. 28, 2022 | Feb. 28, 2021 | Feb. 28, 2022 | Feb. 28, 2021
Fees | $ 1,246,909 | $ 1,462,684 | $ 2,505,767 | $ 2,799,245
Percentage of Total Fees | 100.00% | 100.00% | 100.00% | 100.00%
GERMANY |  |  |  |
Fees | $ 216,992 | $ 231,917 | $ 435,422 | $ 460,744
Percentage of Total Fees | 17.40% | 15.90% | 17.40% | 16.50%
POLAND |  |  |  |
Fees | $ 172,700 | $ 210,943 | $ 349,626 | $ 400,353
Percentage of Total Fees | 13.90% | 14.40% | 14.00% | 14.30%
JAPAN |  |  |  |
Fees | $ 151,933 | $ 181,493 | $ 318,740 | $ 361,455
Percentage of Total Fees | 12.20% | 12.40% | 12.70% | 12.90%
FRANCE |  |  |  |
Fees | $ 115,663 | $ 97,638 | $ 231,958 | $ 203,545
Percentage of Total Fees | 9.30% | 6.70% | 9.30% | 7.30%
SWEDEN |  |  |  |
Fees | $ 99,178 | $ 146,896 | $ 207,248 | $ 237,385
Percentage of Total Fees | 8.00% | 10.00% | 8.30% | 8.50%
UNITED KINGDOM |  |  |  |
Fees | $ 86,736 | $ 71,759 | $ 126,800 | $ 163,298
Percentage of Total Fees | 7.00% | 4.90% | 5.10% | 5.80%
THAILAND |  |  |  |
Fees | $ 87,918 | $ 107,377 | $ 181,663 | $ 133,674
Percentage of Total Fees | 7.10% | 7.30% | 7.20% | 4.80%
KOREA, REPUBLIC OF |  |  |  |
Fees | $ 64,173 | $ 78,220 | $ 175,472 | $ 197,309
Percentage of Total Fees | 5.10% | 5.30% | 7.00% | 7.00%
FINLAND |  |  |  |
Fees | $ 85,426 | $ 71,496 | $ 165,599 | $ 147,779
Percentage of Total Fees | 6.90% | 4.90% | 6.60% | 5.30%
CZECHIA |  |  |  |
Fees | $ 69,386 | $ 89,538 | $ 139,483 | $ 158,891
Percentage of Total Fees | 5.60% | 6.10% | 5.60% | 5.70%
Other Countries [Member] |  |  |  |
Fees | $ 96,804 | $ 175,407 | $ 173,756 | $ 334,811
Percentage of Total Fees | 7.50% | 12.00% | 6.80% | 12.00%

X
- Definition Percentage of entity wide fees for services provided to joint ventures generated from geographic location. + References No definition available. + Details
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Namespace Prefix: | ntic_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total fees for services provided to joint ventures by geographic locations. + References No definition available. + Details
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Namespace Prefix: | ntic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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- Details
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- Details
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- Details
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Namespace Prefix: |
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- Details
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