Consolidated Statements of Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
BALANCE (in shares) at Aug. 31, 2014	4,504,552
BALANCE at Aug. 31, 2014	$ 90,092	$ 12,676,546	$ 32,733,300	$ 253,925	$ 3,837,257	$ 49,591,120
Repurchase of common stock (in shares)	(1,587)
Repurchase of common stock	$ (32)	(24,314)				$ (24,346)
Options Exercised (in shares)	32,874					38,333
Exercise of stock options	$ 657	235,432				$ 236,089
Stock issued for employee stock purchase plan (in shares)	3,206
Stock issued for employee stock purchase plan	$ 64	57,917				57,981
Stock option expense		495,683				495,683
Dividend received by non-controlling interest					(1,160,000)	(1,160,000)
Investment by non-controlling interest					15,625	15,625
Comprehensive income (loss)			1,789,571	(3,434,736)	326,820	(1,318,345)
BALANCE (in shares) at Aug. 31, 2015	4,539,045
BALANCE at Aug. 31, 2015	$ 90,781	13,441,264	34,522,871	(3,180,811)	3,019,702	$ 47,893,807
Repurchase of common stock (in shares)	(11,211)					(11,211)
Repurchase of common stock	$ (225)	(138,656)				$ (138,881)
Options Exercised (in shares)						0
Stock issued for employee stock purchase plan (in shares)	5,582
Stock issued for employee stock purchase plan	$ 112	68,522				$ 68,634
Stock option expense		427,437				427,437
Dividend received by non-controlling interest					(200,000)	(200,000)
Comprehensive income (loss)			(867,514)	171,194	(278,729)	(975,049)
BALANCE (in shares) at Aug. 31, 2016	4,533,416
BALANCE at Aug. 31, 2016	$ 90,668	$ 13,798,567	$ 33,655,357	$ (3,009,617)	$ 2,540,973	$ 47,075,948