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Note 11 - Geographic And Segment Information (Detail) - Fees For Services Provided to Joint Ventures By Geographic Location as a Percentage of Total Fees for Services Provided to Joint Ventures: (USD $)
 3 Months Ended 6 Months Ended
Feb. 28, 2013
Feb. 29, 2012
Feb. 28, 2013
Feb. 29, 2012
Total Fees for Services Provided to Joint Ventures (in Dollars) $ 1,770,881 $ 1,298,126 $ 3,617,158 $ 2,743,378
Percentage of Total Fees for Services Provided to Joint Ventures 100.00% 100.00% 100.00% 100.00%
China [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars) 450,586 [1]    [1] 943,897 [1]    [1]
Percentage of Total Fees for Services Provided to Joint Ventures 25.40% [1] 0.00% [1] 26.10% [1] 0.00% [1]
Germany [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars) 249,513 251,387 492,213 500,833
Percentage of Total Fees for Services Provided to Joint Ventures 14.10% 19.40% 13.60% 18.30%
Japan [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars) 169,205 214,984 371,186 503,522
Percentage of Total Fees for Services Provided to Joint Ventures 9.60% 16.60% 10.30% 18.40%
Poland [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars) 154,839 130,470 301,989  
Percentage of Total Fees for Services Provided to Joint Ventures 8.70% 10.10% 8.40% 0.00%
Thailand [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars) 148,303 [1]    [1] 276,398 [1] 268,643 [1]
Percentage of Total Fees for Services Provided to Joint Ventures 8.40% [1] 0.00% [1] 7.60% [1] 9.80% [1]
France [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars) 147,896 127,004 266,311 228,298
Percentage of Total Fees for Services Provided to Joint Ventures 8.30% 9.80% 7.40% 8.30%
Korea [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars) 123,388 [2] 532 [2] 262,131 [2] 76,997 [2]
Percentage of Total Fees for Services Provided to Joint Ventures 7.00% [2] 0.00% [2] 7.20% [2] 2.80% [2]
Sweden [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars) 77,627 148,277 164,619 304,934
Percentage of Total Fees for Services Provided to Joint Ventures 4.40% 11.40% 4.60% 11.10%
Finland [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars) 72,329 118,911 160,180 251,407
Percentage of Total Fees for Services Provided to Joint Ventures 4.10% 9.20% 4.40% 9.20%
United Kingdom [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars) 35,754 80,639 102,812 160,138
Percentage of Total Fees for Services Provided to Joint Ventures 2.00% 6.20% 2.80% 5.80%
India [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars)   163,689   299,844
Percentage of Total Fees for Services Provided to Joint Ventures 0.00% 12.60% 0.00% 10.90%
Other Countries [Member]
        
Total Fees for Services Provided to Joint Ventures (in Dollars) $ 141,441 $ 62,233 $ 275,422 $ 148,762
Percentage of Total Fees for Services Provided to Joint Ventures 8.00% 4.80% 7.60% 5.40%
[1] Joint venture owned by NTI Asean.
[2] Joint venture owned by NTI Asean as of February 28, 2013, but not as of February 29, 2012. NTI Asean results are not included on the consolidated financial statements for the three months ended February 29, 2012. (See Note 2)