14. UNAUDTED QUARTERLY FINANCIAL DATA (Details) - USD ($)	3 Months Ended								12 Months Ended
	Aug. 31, 2019	May 31, 2019	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 8,026,000	$ 9,937,000	$ 8,472,000	$ 7,536,000	$ 6,688,000	$ 8,553,000	$ 7,357,000	$ 7,069,000	$ 33,970,440	$ 29,666,524	$ 24,137,913
Gross Profit	5,735,000	7,613,000	6,264,000	5,336,000	4,568,000	6,530,000	5,241,000	5,333,000	24,944,736	21,672,296	17,830,113
Net Income	$ 2,059,000	$ 2,889,000	$ 2,099,000	$ 1,536,000	$ 1,338,000	$ 2,406,000	$ 3,475,000	$ 1,716,000	$ 8,583,329	$ 8,934,812	$ 5,787,597
Earnings per share, Basic	$ 0.12	$ 0.16	$ 0.12	$ 0.09	$ 0.08	$ 0.14	$ 0.20	$ 0.10	$ 0.49	$ 0.52	$ 0.34
Earnings per share, Diluted	$ 0.11	$ 0.16	$ 0.12	$ 0.09	$ 0.07	$ 0.13	$ 0.19	$ 0.10	$ 0.48	$ 0.5	$ 0.33