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Note 3 - NTI ASEAN (Tables) | 12 Months Ended
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Aug. 31, 2013
Business Combinations [Abstract] |
Schedule of Business Acquisitions, by Acquisition [Table Text Block] |
Net assets acquired (liabilities assumed): |  |  |
Cash and cash equivalents |  | $ | 1,613,000 |
Accounts receivables |  |  | 1,342,000 |
Investments in joint ventures |  |  | 4,967,000 |
Value of assets |  | $ | 7,922,000 |
Purchase price: |  |  |  |
Fair value of non-controlling interest |  | $ | 3,961,000 |
Value of previously held interest |  |  | 3,961,000 |
Total consideration |  | $ | 7,922,000 |
Business Acquisition, Pro Forma Information [Table Text Block] |
|  | As Reported |  |  | NTI Asean |  |  | Eliminated in Consolidation |  |  | Pro Forma |
Net sales |  | $ | 22,781,653 |  |  | $ | — |  |  | $ | — |  |  | $ | 22,781,653 |
Cost of goods sold |  |  | 14,528,785 |  |  |  | — |  |  |  | — |  |  |  | 14,528,785 |
Gross profit |  |  | 8,252,868 |  |  |  | — |  |  |  | — |  |  |  | 8,252,868 |
Joint venture operations |  |  | 10,142,707 |  |  |  | 3,395,354 |  |  |  | (1,414,248 | ) |  |  | 12,123,813 |
Operating expenses |  |  | 13,825,806 |  |  |  | 185,700 |  |  |  | — |  |  |  | 14,011,506 |
Operating income |  |  | 4,569,769 |  |  |  | 3,209,654 |  |  |  | (1,414,248 | ) |  |  | 6,365,175 |
Income before income tax expense |  |  | 4,616,646 |  |  |  | 3,209,654 |  |  |  | (1,414,248 | ) |  |  | 6,412,052 |
Income tax expense |  |  | 1,041,000 |  |  |  | 381,466 |  |  |  | — |  |  |  | 1,422,466 |
Net income |  |  | 3,575,646 |  |  |  | 2,828,188 |  |  |  | (1,414,248 | ) |  |  | 4,989,586 |
Net income attributable to non-controlling interest |  |  | 127,450 |  |  |  | (1,131,275 | ) |  |  | — |  |  |  | (1,003,825 | )
Net income attributable to NTIC |  |  | 3,448,196 |  |  |  | 1,696,913 |  |  |  | (1,414,248 | ) |  |  | 3,730,861 |
Net income per common diluted share |  | $ | 0.78 |  |  | $ | 0.38 |  |  | $ | (0.32 | ) |  | $ | 0.84 |

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