6. Earnings (Loss) Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Net income (loss) attributable to parent company	$ (731,010)	$ 525,338	$ (1,168,302)	$ 787,879
Weighted-average shares of common stock outstanding:
Basic shares outstanding	10,520,203	10,495,994	10,520,203	10,483,870
Dilutive effect of common stock equivalents arising from stock options	0	258,579	0	258,449
Diluted shares outstanding	10,520,203	10,754,573	10,520,203	10,742,449
Basic earnings (loss) per share	$ (0.07)	$ 0.05	$ (0.11)	$ 0.08
Diluted earnings (loss) per share	$ (0.07)	$ 0.05	$ (0.11)	$ 0.07