3. Fair Value of Financial Instruments (Details) - USD ($)	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Assets
Cash and cash equivalents	$ 1,245,000	$ 482,000	$ 493,700
Restricted cash	0	300,000
Available for sale securities	290,100	281,800
Total	1,535,100	1,063,800
Liabilities:
Contingent consideration	346,300	367,100	$ 500,000
Level 1
Assets
Cash and cash equivalents	1,245,000	482,000
Restricted cash		300,000
Available for sale securities	290,100	281,800
Total	1,535,100	1,063,800
Liabilities:
Contingent consideration	0	0
Level 2
Assets
Cash and cash equivalents	0	0
Restricted cash		0
Available for sale securities	0	0
Total	0	0
Liabilities:
Contingent consideration	0	0
Level 3
Assets
Cash and cash equivalents	0	0
Restricted cash		0
Available for sale securities	0	0
Total	0	0
Liabilities:
Contingent consideration	$ 346,300	$ 367,100