Consolidated Statements of Equity (Unaudited) - 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, 2019	9,086,816
BALANCE at Aug. 31, 2019	$ 181,736	$ 16,013,338	$ 44,992,718	$ (4,593,178)	$ 3,074,679	$ 59,669,293
Stock issued for employee stock purchase plan	72	35,536	0	0	0	35,608
Stock option expense	0	658,470	0	0	0	658,470
Dividends paid to stockholders	0	0	(1,182,199)	0	0	(1,182,199)
Dividend received by non-controlling interest	0	0	0	0	0	0
Net income	0	0	1,392,384	0	250,977	1,643,361
Other comprehensive income (loss)	0	0	0	(9,171)	(23,496)	(32,667)
Stock options exercised	$ 137	(137)	0	0	0	0
Stock issued for employee stock purchase plan (in shares)	3,597
BALANCE (in shares) at Feb. 29, 2020	9,097,236
BALANCE at Feb. 29, 2020	$ 181,945	16,707,207	45,202,903	(4,602,349)	3,302,160	60,791,866
BALANCE (in shares) at Nov. 30, 2019	9,097,236
BALANCE at Nov. 30, 2019	$ 181,945	16,367,555	45,614,389	(4,490,364)	3,244,530	60,918,055
Stock issued for employee stock purchase plan	0	0	0	0	0	0
Stock option expense	0	339,652	0	0	0	339,652
Dividends paid to stockholders	0	0	(591,320)	0	0	(591,320)
Dividend received by non-controlling interest	0	0	0	0	0	0
Net income	0	0	179,834	0	103,988	283,822
Other comprehensive income (loss)	$ 0	0	0	(111,985)	(46,358)	(158,343)
BALANCE (in shares) at Feb. 29, 2020	9,097,236
BALANCE at Feb. 29, 2020	$ 181,945	16,707,207	45,202,903	(4,602,349)	3,302,160	60,791,866
BALANCE (in shares) at Aug. 31, 2020	9,099,990
BALANCE at Aug. 31, 2020	$ 182,000	17,415,043	42,472,810	(3,410,438)	3,045,026	59,704,441
Stock issued for employee stock purchase plan	93	36,099	0	0	0	36,192
Stock option expense	0	342,504	0	0	0	342,504
Dividends paid to stockholders	0	0	(591,802)	0	0	(591,802)
Dividend received by non-controlling interest	0	0	0	0	(200,000)	(200,000)
Net income	0	0	2,574,974	0	333,649	2,908,623
Other comprehensive income (loss)	0	0	0	440,875	54,131	495,006
Stock options exercised	$ 0	0	0	0	0	0
Stock issued for employee stock purchase plan (in shares)	4,646
BALANCE (in shares) at Feb. 28, 2021	9,104,636
BALANCE at Feb. 28, 2021	$ 182,093	17,793,646	44,455,982	(2,969,563)	3,232,806	62,694,964
BALANCE (in shares) at Nov. 30, 2020	9,104,636
BALANCE at Nov. 30, 2020	$ 182,093	17,632,811	43,735,209	(3,179,678)	3,255,689	61,626,124
Stock issued for employee stock purchase plan	0	0	0	0	0	0
Stock option expense	0	160,835	0	0	0	160,835
Dividends paid to stockholders	0	0	(591,802)	0	0	(591,802)
Dividend received by non-controlling interest	0	0	0	0	(200,000)	(200,000)
Net income	0	0	1,312,575	0	190,891	1,503,466
Other comprehensive income (loss)	$ 0	0	0	210,115	(13,774)	196,341
BALANCE (in shares) at Feb. 28, 2021	9,104,636
BALANCE at Feb. 28, 2021	$ 182,093	$ 17,793,646	$ 44,455,982	$ (2,969,563)	$ 3,232,806	$ 62,694,964