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Note 7 - Investments in Joint Ventures (Tables)

6 Months Ended

Feb. 28, 2022

Notes Tables

Condensed Balance Sheet [Table Text Block]

		As of February 28, 2022
		Total				EXCOR				All Other
Current assets		$	55,032,109			$	25,447,104			$	29,585,005
Total assets			58,525,731				27,186,903				31,338,828
Current liabilities			12,803,351				3,004,495				9,798,856
Noncurrent liabilities			1,268,334				-				1,268,334
Joint ventures’ equity			44,454,046				24,182,408				20,271,638
Northern Technologies International Corporation’s share of joint ventures’ equity			21,852,070				12,091,206				9,760,864
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings			20,501,921				12,060,301				8,441,621

		As of August 31, 2021
		Total				EXCOR				All Other⁽¹⁾
Current assets		$	69,394,796			$	33,886,655			$	35,508,141
Total assets			73,814,402				36,211,520				37,602,882
Current liabilities			16,366,398				5,386,377				10,980,021
Noncurrent liabilities			1,455,524				—				1,455,524
Joint ventures’ equity			55,992,480				30,825,144				25,167,336
Northern Technologies International Corporation’s share of joint ventures’ equity			27,623,768				15,412,574				12,211,194
Northern Technologies International Corporation’s share of joint ventures’ undistributed earnings			24,702,778				14,697,490				10,005,288

Condensed Income Statement [Table Text Block]

		Three Months Ended February 28, 2022
		Total				EXCOR				All Other
Net sales		$	24,601,767			$	9,312,434			$	15,289,334
Gross profit			9,845,002				4,658,450				5,186,553
Net income			1,851,591				1,170,187				681,404
Northern Technologies International Corporation’s share of equity in income from joint ventures			922,832				589,048				333,784
Northern Technologies International Corporation's dividends received from joint ventures			320,365				—				320,365

		Six Months Ended February 28, 2022
		Total				EXCOR				All Other
Net sales		$	51,624,762			$	20,612,662			$	31,012,100
Gross profit			20,877,961				10,127,436				10,750,525
Net income			4,629,196				2,991,734				1,637,462
Northern Technologies International Corporation’s share of equity in income from joint ventures			2,297,581				1,499,821				797,760
Northern Technologies International Corporation's dividends received from joint ventures			5,362,636				4,255,200				1,107,436

		Three Months Ended February 28, 2021
		Total				EXCOR				All Other⁽¹⁾
Net sales		$	29,058,402			$	10,542,097			$	18,516,306
Gross profit			13,079,478				6,099,187				6,980,291
Net income			3,838,007				2,262,321				1,575,686
Northern Technologies International Corporation’s share of equity in income from joint ventures			1,920,012				1,132,578				787,434
Northern Technologies International Corporation's dividends received from joint ventures			2,198,142				1,809,900				388,242

		Six Months Ended February 28, 2021
		Total				EXCOR				All Other⁽¹⁾
Net sales		$	55,835,745			$	20,093,580			$	35,742,165
Gross profit			25,521,239				11,798,194				13,723,045
Net income			7,489,431				4,283,395				3,206,036
Northern Technologies International Corporation’s share of equity in income from joint ventures			3,745,724				2,143,115				1,602,609
Northern Technologies International Corporation's dividends received from joint ventures			3,323,503				1,809,900				1,513,603