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Note 5 - Investments in Joint Ventures (Tables)

9 Months Ended

May 31, 2014

Equity Method Investments and Joint Ventures [Abstract]

Condensed Balance Sheet [Table Text Block]

		At May 31, 2014
		Total				EXCOR				China				All Other
Current assets		$	58,975,346			$	22,560,299			$	8,541,897			$	27,873,150
Total assets			63,172,232				24,920,587				8,561,641				29,690,004
Current liabilities			14,208,070				1,956,574				1,926,986				10,324,510
Noncurrent liabilities			3,373,373				1,321,199				853,839				1,198,335
Joint ventures’ equity			45,590,789				21,642,814				5,780,816				18,167,159
Company’s share of joint ventures’ equity			22,103,275				10,821,409				2,225,409				9,056,460
Company’s share of joint ventures’ undistributed earnings		$	19,681,808			$	10,790,504			$	2,175,409			$	6,715,895

		At August 31, 2013
		Total				EXCOR				China				All Other
Current assets		$	63,052,410			$	25,955,136			$	11,200,355			$	25,896,919
Total assets			68,417,142				28,391,787				11,226,755				28,798,600
Current liabilities			16,107,597				3,572,004				3,080,118				9,455,475
Noncurrent liabilities			2,488,057				—				871,886				1,616,171
Joint ventures’ equity			49,821,488				24,819,783				7,274,751				17,726,954
Company’s share of joint ventures’ equity			24,702,981				12,409,893				3,637,375				8,655,713
Company’s share of joint ventures’ undistributed earnings		$	22,281,510			$	12,378,988			$	3,587,375			$	6,315,147

Condensed Income Statement [Table Text Block]

		Nine Months Ended May 31, 2014
		Total				EXCOR				China				All Other
Net sales		$	88,213,101			$	29,020,416			$	11,952,115			$	47,240,570
Gross profit			41,609,619				15,000,023				5,550,166				21,059,430
Net income			9,960,639				5,574,387				1,543,155				1,913,097
Company’s share of equity in income of joint ventures		$	4,416,664			$	2,787,048			$	659,684			$	969,932

		Nine Months Ended May 31, 2013
		Total				EXCOR				China				All Other
Net sales		$	82,788,711			$	26,043,775			$	10,802,206			$	45,942,730
Gross profit			39,447,084				13,624,792				5,134,820				20,687,472
Net income			7,626,711				4,954,595				815,664				1,856,452
Company’s share of equity in income of joint ventures		$	3,733,069			$	2,478,109			$	407,809			$	847,151

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