2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Earnings per share) - USD ($)	3 Months Ended								12 Months Ended
	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2016
Numerator
Net income attributable to common shareholders	$ 1,338,000	$ 2,406,000	$ 3,475,000	$ 1,716,000	$ 1,151,000	$ 2,080,000	$ 1,196,000	$ 1,362,000	$ 8,934,812	$ 5,787,597	$ 4,950,136
Denominator
Weighted-average number of common shares outstanding during the period									17,328,707	17,239,490	17,028,566
Dilutive effect of stock options									531,685	276,427	180,940
Common stock and common stock equivalents used for diluted earnings per share									17,860,392	17,515,917	17,209,506