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Note 6 - Investments in Joint Ventures (Tables)

3 Months Ended

Nov. 30, 2017

Notes Tables

Condensed Balance Sheet [Table Text Block]

		As of November 30, 2017
		Total				EXCOR				All Other
Current assets		$	57,249,505			$	25,234,973			$	32,014,532
Total assets			61,290,726				27,337,417				33,953,309
Current liabilities			17,410,457				4,987,804				12,422,653
Noncurrent liabilities			184,251				—				184,251
Joint ventures’ equity			43,696,018				22,349,613				21,346,405
Northern Technologies International Corporation’s share of joint ventures’ equity			21,701,913				11,174,808				10,527,105
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings		$	19,590,029			$	11,143,903			$	8,446,126
Northern Technologies International Corporation's dividends received from joint ventures		$	63,937			$	—			$	63,937

		As of August 31, 2017
		Total				EXCOR				All Other
Current assets		$	51,518,210			$	22,142,514			$	29,375,696
Total assets			55,633,891				24,301,194				31,332,697
Current liabilities			15,118,074				4,469,567				10,648,507
Noncurrent liabilities			181,210				—				181,210
Joint ventures’ equity			40,334,607				19,831,627				20,502,980
Northern Technologies International Corporation’s share of joint ventures’ equity			20,035,074				9,915,816				10,119,258
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings			17,960,860				9,884,911				8,075,949
Northern Technologies International Corporation's dividends received from joint ventures		$	6,377,054			$	5,379,062			$	997,992

Condensed Income Statement [Table Text Block]


		Three Months Ended November 30, 2017
		Total				EXCOR				All Other
Net sales		$	28,498,711			$	11,026,514			$	17,472,197
Gross profit			12,788,122				5,933,526				6,854,596
Net income			3,499,815				2,483,800				1,016,015
Northern Technologies International Corporation’s share of equity in income from joint ventures		$	1,741,328			$	1,241,900			$	499,428

		Three Months Ended November 30, 2016
		Total				EXCOR				All Other
Net sales		$	24,200,447			$	9,208,524			$	14,991,923
Gross profit			10,697,027				4,894,179				5,802,848
Net income			2,408,008				1,856,338				551,670
Northern Technologies International Corporation’s share of equity in income from joint ventures		$	1,274,004			$	928,169			$	345,835