3. Fair Value of Financial Instruments (Details 2) - USD ($)	Mar. 31, 2018	Jun. 30, 2017
Cost	$ 313,500	$ 299,000
Fair Value	309,100	295,500
Unrealized Holding Gain (Loss)	(4,400)	(3,500)
Equity Securities
Cost	45,700	37,000
Fair Value	63,300	50,800
Unrealized Holding Gain (Loss)	17,600	13,800
Mutual Funds
Cost	267,800	262,000
Fair Value	245,800	244,700
Unrealized Holding Gain (Loss)	$ (22,000)	$ (17,300)