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Note 8 - Stockholders' Equity	3 Months Ended
	Nov. 30, 2019
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	8. STOCKHOLDERS’ EQUITY On June 3, 2019, the Company’s Board of Directors declared a two -for- one stock split of the Company’s common stock effected in the form of a 100% share dividend distributed on June 28, 2019 to record holders as of June 17, 2019. All share and per share values have been adjusted to retroactively reflect the effect of the two -for- one stock split. On October 22, 2019, the Company’s Board of Directors declared a cash dividend of $0.065 per share of NTIC’s common stock, payable on November 20, 2019 to stockholders of record on November 6, 2019. On October 24, 2018, the Company’s Board of Directors declared a cash dividend of $0.06 per share of NTIC’s common stock, payable on November 21, 2018 to stockholders of record on November 7, 2018. During the three months ended November 30, 2019 and 2018, the Company repurchased no shares of its common stock. During the three months ended November 30, 2019, the Company granted stock options under the Northern Technologies International Corporation 2019 Stock Incentive Plan (the 2019 Plan) to purchase an aggregate of 300,770 shares of its common stock to various employees and directors. The weighted average per share exercise price of the stock options is $10.80. The exercise price of the stock options is equal to the fair market value of the Company’s common stock on the date of grant. During the three months ended November 30, 2019, no stock options to purchase common stock were exercised. During the three months ended November 30, 2018, the Company granted stock options under the Northern Technologies International Corporation Amended and Restated 2007 Stock Incentive Plan (the 2007 Plan) to purchase an aggregate of 141,768 shares of its common stock to various employees and directors. The weighted average per share exercise price of the stock options is $18.23, which was equal to the fair market value of the Company’s common stock on the date of grant. During the three months ended November 30, 2018, no stock options to purchase common stock were exercised. The Company issued 3,597 and 1,748 shares of common stock on September 1, 2019 and 2018, respectively, under the Northern Technologies International Corporation Employee Stock Purchase Plan (the ESPP).

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- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI http://asc.fasb.org/topic&trid=2208762

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