7. Earnings (Loss) Per Common Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Net income (loss)	$ 118,400	$ (81,000)	$ 260,500	$ (313,600)
Weighted average common shares outstanding	1,494,112	1,494,112	1,494,112	1,494,112
Effect of dilutive securities	18,839	0	11,368	0
Weighted average dilutive common shares outstanding	1,512,951	0	1,505,480	0
Basic earnings (loss) per common share	$ 0.08	$ (.05)	$ 0.17	$ (.21)
Diluted earnings (loss) per common share	$ 0.08	$ (0.05)	$ 0.17	$ (.21)