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Note 15 - Subsequent Event	3 Months Ended
	Nov. 30, 2014
Subsequent Events [Abstract]
Subsequent Events [Text Block]	15.           SUBSEQUENT EVENT On January 2, 2015, the Company announced that, effective as of December 31, 2014, the Company terminated its joint venture arrangement in China and intends to conduct future business in China through a newly formed wholly owned subsidiary, NTIC (Shanghai) Co. Ltd. (NTIC China).  The Company anticipates that as a result of the terminated relationship, the operations of the Chinese joint venture will cease and the joint venture entity will be liquidated. In connection with the formation and establishment of NTIC China, the Company invested $500,000 during the first quarter of fiscal 2015 and anticipates investing an additional $1,500,000 during the remainder of fiscal 2015 to serve as working capital for NTIC China.  NTIC incurred approximately $225,000 of direct expenses during the three months ended November 30, 2014 related to the termination of its previous joint venture in China and the formation of NTIC China.  Such expenses consisted primarily of legal expenses and personnel expenses associated with the establishment of the subsidiary, the hiring of new personnel and initial operations.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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