4. Fair Value of Financial Instruments (Details) - USD ($)	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Assets
Cash and cash equivalents	$ 482,000	$ 493,700	$ 927,300
Restricted cash	300,000	0
Available for sale securities	281,800	415,400
Total	1,063,800	909,100
Liabilities:
Contingent consideration	367,100	500,000
Level 1
Assets
Cash and cash equivalents	482,000	493,700
Restricted cash	300,000
Available for sale securities	281,800	415,400
Total	1,063,800	909,100
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	$ 367,100	$ 500,000