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Note 12 - Geographic and Segment Information (Tables)

12 Months Ended

Aug. 31, 2014

Note 12 - Geographic and Segment Information (Tables) [Line Items]

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

		Fiscal Year Ended August 31,
		2014				2013
Inside the U.S.A. to unaffiliated customers			66.2	%			70.7	%
Outside the U.S.A. to:
Joint ventures in which the Company is a shareholder directly and indirectly			12.7	%			13.4	%
Unaffiliated customers			21.1	%			15.9	%
			100.0	%			100.0	%

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

		Fiscal 2014				Fiscal 2013				$ Change				% Change
ZERUST® net sales		$	23,845,288			$	20,457,198			$	3,388,090				16.6	%
Natur-Tec® net sales			2,980,820				2,044,666				936,154				45.8	%
Total net sales		$	26,826,108			$	22,501,864			$	4,324,244				19.2	%

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

		Fiscal 2014				% of Product Sales*				Fiscal 2013				% of Product Sales*
Direct cost of goods sold
ZERUST®		$	12,941,234				54.3	%		$	11,408,604				55.8	%
Natur-Tec®			2,234,736				75.0	%			1,731,398				84.7	%
Indirect cost of goods sold			2,627,183				—				2,333,210				—
Total net cost of goods sold		$	17,803,153				66.4	%		$	15,473,212				68.8	%

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

		At August 31, 2014				At August 31, 2013
Brazil		$	1,429,054			$	1,419,543
India			363,894
North America			52,264,827				47,634,406
Total assets		$	54,057,775			$	49,053,949

Schedule of Segment Reporting Information, by Segment [Table Text Block]

		Fiscal Year Ended August 31, 2014				Fiscal Year Ended August 31, 2013
Brazil		$	3,079,695			$	2,394,486
India			581,535				--
North America			23,164,878				20,107,378
Total net sales		$	26,826,108			$	22,501,864

		Fiscal Year Ended August 31, 2014				Fiscal Year Ended August 31, 2013
Brazil		$	231,054			$	(273,246	)
India			15,132				--
North America			6,448,200				5,238,222
Total operating income		$	6,694,386			$	4,964,976

Fees For Services Provided to Joint Ventures [Member]

Note 12 - Geographic and Segment Information (Tables) [Line Items]

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

		Fiscal 2014				% of Total Fees for Services Provided to Joint Ventures in Fiscal 2014				Fiscal 2013				% of Total Fees for Services Provided to Joint Ventures in Fiscal 2013
China		$	2,118,018				26.0	%		$	2,063,369				28.1	%
Germany			1,032,234				12.7	%			1,004,958				13.7	%
Japan			669,522				8.2	%			723,977				9.8	%
Poland			652,291				8.0	%			525,282				7.1	%
Thailand			604,316				7.4	%			621,807				8.4	%
France			508,705				6.2	%			496,897				6.8	%
Sweden			440,117				5.4	%			415,547				5.7	%
United Kingdom			385,294				4.7	%			236,125				3.2	%
India			364,918				4.5	%			—				0.0	%
Finland			355,391				4.4	%			321,256				4.4	%
Korea			315,916				3.9	%			393,307				5.3	%
Czech			288,367				3.6	%			210,827				2.9	%
Other			407,775				5.0	%			339,628				4.6	%
		$	8,142,863				100.0	%		$	7,352,980				100.0	%

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