7. SHAREHOLDERS EQUITY (Details - Dividends) - USD ($)	9 Months Ended		12 Months Ended
	May 31, 2019	May 31, 2018	Aug. 31, 2018
Total dividends paid amount	$ 3,144,864	$ 3,117,393	$ 4,161,740
FY 2018 1st Qtr [Member]
Record Date			Nov. 13, 2017
Distribution Date			Nov. 20, 2017
Number of Shares Outstanding on Record Date			17,284,792
Dividend per Share			$ 0.06
Total dividends paid amount			$ 1,037,088
FY 2018 2nd Qtr [Member]
Record Date			Jan. 26, 2018
Distribution Date			Feb. 02, 2018
Number of Shares Outstanding on Record Date			17,317,752
Dividend per Share			$ 0.06
Total dividends paid amount			$ 1,039,065
FY 2018 3rd Qtr [Member]
Record Date			Apr. 25, 2018
Distribution Date			May 02, 2018
Number of Shares Outstanding on Record Date			17,354,005
Dividend per Share			$ 0.06
Total dividends paid amount			$ 1,041,240
FY 2018 4th Qtr [Member]
Record Date			Jul. 26, 2018
Distribution Date			Aug. 02, 2018
Number of Shares Outstanding on Record Date			17,405,775
Dividend per Share			$ 0.06
Total dividends paid amount			$ 1,044,347
FY 2019 1st Qtr [Member]
Record Date	Nov. 01, 2018
Distribution Date	Nov. 08, 2018
Number of Shares Outstanding on Record Date	17,417,875
Dividend per Share	$ 0.06
Total dividends paid amount	$ 1,045,073
FY 2019 2nd Qtr [Member]
Record Date	Jan. 25, 2019
Distribution Date	Feb. 01, 2019
Number of Shares Outstanding on Record Date	17,481,450
Dividend per Share	$ 0.06
Total dividends paid amount	$ 1,048,887
FY 2019 3rd Qtr [Member]
Record Date	Apr. 09, 2019
Distribution Date	May 01, 2019
Number of Shares Outstanding on Record Date	17,515,228
Dividend per Share	$ 0.06
Total dividends paid amount	$ 1,050,904