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Note 13 - Fees for Services Provided to Joint Ventures by Geographic Location as a Percentage of Total Fees for Services Provided to Joint Ventures (Details) - USD ($) | 12 Months Ended
--- | ---
Aug. 31, 2015 | Aug. 31, 2014 | Aug. 31, 2013
GERMANY |  |  |
Fees for services provided | $ 873,400 | $ 1,032,234 | $ 1,004,958
Fees for services provided, percentage | 15.30% | 12.70% | 13.70%
POLAND |  |  |
Fees for services provided | $ 600,255 | $ 652,291 | $ 525,282
Fees for services provided, percentage | 10.50% | 8.00% | 7.10%
JAPAN |  |  |
Fees for services provided | $ 599,108 | $ 669,522 | $ 723,977
Fees for services provided, percentage | 10.50% | 8.20% | 9.80%
THAILAND |  |  |
Fees for services provided | $ 554,881 | $ 604,316 | $ 621,807
Fees for services provided, percentage | 9.70% | 7.40% | 8.40%
CHINA |  |  |
Fees for services provided | $ 494,080 | $ 2,118,018 | $ 2,063,369
Fees for services provided, percentage | 8.60% | 26.00% | 28.10%
FRANCE |  |  |
Fees for services provided | $ 412,608 | $ 508,705 | $ 496,897
Fees for services provided, percentage | 7.20% | 6.20% | 6.80%
UNITED KINGDOM |  |  |
Fees for services provided | $ 396,514 | $ 385,294 | $ 236,125
Fees for services provided, percentage | 6.90% | 4.70% | 3.20%
SWEDEN |  |  |
Fees for services provided | $ 323,610 | $ 440,117 | $ 415,547
Fees for services provided, percentage | 5.70% | 5.40% | 5.70%
INDIA |  |  |
Fees for services provided | $ 277,548 | $ 364,918 |
Fees for services provided, percentage | 4.90% | 4.50% | 0.00%
CZECH REPUBLIC |  |  |
Fees for services provided | $ 229,185 | $ 288,367 | $ 210,827
Fees for services provided, percentage | 4.00% | 3.60% | 2.90%
Korea [Member] |  |  |
Fees for services provided | $ 192,539 | $ 315,916 | $ 393,307
Fees for services provided, percentage | 3.40% | 3.90% | 5.30%
FINLAND |  |  |
Fees for services provided | $ 281,620 | $ 355,391 | $ 321,256
Fees for services provided, percentage | 4.90% | 4.40% | 4.40%
Other Countries [Member] |  |  |
Fees for services provided | $ 480,143 | $ 407,775 | $ 339,628
Fees for services provided, percentage | 8.40% | 5.00% | 4.60%
Fees for services provided | $ 5,715,491 | $ 8,142,863 | $ 7,352,980
Fees for services provided, percentage | 100.00% | 100.00% | 100.00%

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: | num: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
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Period Type: |

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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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