11. EARNINGS (LOSS) PER SHARE (Details - Diluted loss per share) - USD ($)	3 Months Ended								12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2019	Sep. 30, 2018
Numerator:
Net income (loss) (numerator for basic and diluted earnings (loss) per share)	$ (1,838,536)	$ (104,062)	$ (1,130,905)	$ (530,527)	$ 148,718	$ 235,484	$ 948,467	$ 46,651	$ (3,604,030)	$ 1,379,320
Denominator:
Weighted average shares outstanding (denominator for basic earnings (loss) per share)									9,532,034	9,264,670
Effect of dilutive securities
Assumed exercise of stock options, treasury stock method									0	36,621
Assumed vesting of restricted stock, treasury stock method									0	53,378
Dilutive potential common shares									0	89,999
Denominator for diluted earnings (loss) per share - weighted average shares and assumed potential common shares									9,532,034	9,354,669
Basic earnings (loss) per share									$ (0.38)	$ 0.15
Diluted earnings (loss) per share									$ (0.38)	$ 0.15