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Note 11 - Segment and Geographic Information (Tables)

9 Months Ended

May 31, 2023

Notes Tables

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

		Three Months Ended May 31,								Nine Months Ended May 31,
		2023				2022				2023				2022
ZERUST® net sales		$	16,100,674			$	14,446,832			$	45,929,422			$	41,988,394
Natur-Tec® net sales			4,869,052				4,518,089				13,263,895				11,918,579
Total net sales		$	20,969,726			$	18,964,921			$	59,193,317			$	53,906,973

		Three Months Ended May 31,
		2023				% of Total Fees for Services Provided to Joint Ventures				2022				% of Total Fees for Services Provided to Joint Ventures
Poland		$	224,288				16.5	%		$	171,181				12.9	%
Germany			209,398				15.4	%			204,316				15.4	%
Japan			152,593				11.2	%			168,075				12.6	%
Sweden			144,981				10.7	%			130,681				9.8	%
France			128,149				9.4	%			123,869				9.3	%
Finland			103,879				7.6	%			92,036				6.9	%
Czech Republic			99,090				7.3	%			84,797				6.4	%
Thailand			82,725				6.1	%			95,574				7.2	%
United Kingdom			83,586				6.1	%			89,363				6.7	%
South Korea			61,669				4.5	%			78,542				5.9	%
Other			70,953				5.2	%			91,554				6.9	%
		$	1,361,311				100.0	%		$	1,329,988				100.0	%

Reconciliation of Cost of Goods Sold from Segments to Consolidated [Table Text Block]

		Three Months Ended May 31,																Nine Months Ended May 31,
		2023 (Restated)				% of Product Sales*				2022				% of Product Sales*				2023 (Restated)				% of Product Sales*				2022				% of Product Sales*
Direct cost of goods sold
ZERUST®		$	9,116,091				56.6	%		$	8,409,392				58.2	%		$	26,410,796				57.5	%		$	25,267,333				60.2	%
Natur-Tec®			3,576,676				73.5	%			3,432,152				76.0	%			10,078,385				76.0	%			9,129,686				76.6	%
Indirect cost of goods sold			697,106				—				881,289				—				2,468,091				—				2,580,601				—
Total net cost of goods sold		$	13,389,873							$	12,722,833							$	38,957,272							$	36,977,620

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

		Three Months Ended May 31,								Nine Months Ended May 31,
		2023				2022				2023				2022
Inside the U.S.A. to unaffiliated customers		$	7,729,820			$	6,884,726			$	21,958,978			$	18,157,010
Outside the U.S.A. to:
Joint ventures in which the Company is a shareholder directly and indirectly			732,437				528,665				2,895,665				2,252,618
Unaffiliated customers			12,507,469				11,551,530				34,338,674				33,497,345
		$	20,969,726			$	18,964,921			$	59,193,317			$	53,906,973

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

		Nine Months Ended May 31,
		2023				% of Total Fees for Services Provided to Joint Ventures				2022				% of Total Fees for Services Provided to Joint Ventures
Poland		$	610,911				16.1	%		$	520,807				13.6	%
Germany			606,189				16.0	%			639,738				16.7	%
Japan			454,308				12.0	%			486,815				12.7	%
Sweden			358,032				9.4	%			337,929				8.8	%
France			356,444				9.4	%			355,827				9.3	%
Finland			285,931				7.5	%			257,635				6.7	%
Czech Republic			270,422				7.1	%			224,280				5.8	%
Thailand			257,282				6.8	%			271,046				7.1	%
United Kingdom			206,925				5.5	%			271,027				7.1	%
South Korea			190,866				5.0	%			205,342				5.4	%
Other			198,552				5.2	%			265,309				6.8	%
		$	3,795,862				100.0	%		$	3,835,755				100.0	%

Revenue from External Customers by Geographic Areas [Table Text Block]

		At May 31, 2023				At August 31, 2022
China		$	5,805,738			$	5,826,898
Other			770,863				565,022
United States			7,234,329				5,778,573
Total property and equipment, net		$	13,810,930			$	12,170,493

		Three Months Ended May 31,								Nine Months Ended May 31,
		2023				2022				2023				2022
China		$	3,318,373			$	3,624,396			$	9,936,808			$	11,845,989
Brazil			1,488,510				1,554,364				4,062,718				3,786,670
India			5,145,423				4,824,004				14,356,708				13,369,769
Other			3,287,600				2,077,431				8,878,105				6,747,535
United States			7,729,820				6,884,726				21,958,978				18,157,010
Total net sales		$	20,969,726			$	18,964,921			$	59,193,317			$	53,906,973

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