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, 2017	9,070,036
BALANCE at Aug. 31, 2017	$ 181,400	$ 14,072,809	$ 37,077,483	$ (2,471,064)	$ 2,857,448	$ 51,718,076
Stock options exercised (in shares)	8,820					8,820
Stock options exercised	$ 176	15,257				$ 15,433
Stock issued for employee stock purchase plan (in shares)	3,750
Stock issued for employee stock purchase plan	$ 76	27,875				27,951
Stock option expense		413,010				413,010
Dividends paid to shareholders			(1,815,508)			(1,815,508)
Dividend received by non-controlling interest					(600,000)	(600,000)
Net income			6,701,366		521,481	7,222,847
Other comprehensive loss				(1,126,135)	(36,620)	(1,162,755)
BALANCE (in shares) at Aug. 31, 2018	9,082,606
BALANCE at Aug. 31, 2018	$ 181,652	14,528,951	41,963,341	(3,597,199)	2,742,309	$ 55,819,054
Stock options exercised (in shares)						0
Stock issued for employee stock purchase plan (in shares)	4,210
Stock issued for employee stock purchase plan	$ 84	52,462				$ 52,546
Stock option expense		1,431,925				1,431,925
Dividends paid to shareholders			(2,180,244)			(2,180,244)
Dividend received by non-controlling interest					(400,000)	(400,000)
Net income			5,209,622		606,000	5,815,622
Other comprehensive loss				(995,979)	(7,664)	(1,003,643)
Investment by non-controlling Interest					134,034	134,034
BALANCE (in shares) at Aug. 31, 2019	9,086,816
BALANCE at Aug. 31, 2019	$ 181,736	$ 16,013,338	$ 44,992,719	$ (4,593,178)	$ 3,074,679	$ 59,669,294