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Note 3 - NTI ASEAN (Details Textual) - NTI Asean LLC [Member]
1 Months Ended
Sep. 30, 2012
Aug. 31, 2015
Aug. 31, 2012
Equity Method Investment, Ownership Percentage   60.00% 50.00%
Business Acquisition, Percentage of Voting Interests Acquired 10.00%    
Business Acquisition Ownership Percentage Subsequent to Acquisition 60.00%    
Fair Value Inputs, Discount Rate 25.00%