4. Fair Value of Financial Instruments (Details) - USD ($)	Mar. 31, 2017	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015
Assets:
Cash and cash equivalents	$ 1,211,300	$ 1,245,000	$ 1,081,000	$ 482,000
Available for sale securities	294,000	290,100
Total	1,505,300	1,535,100
Liabilities:
Contingent consideration	180,200	346,300
Level 1
Assets:
Cash and cash equivalents	1,211,300	1,245,000
Available for sale securities	294,000	290,100
Total	1,505,300	1,535,100
Liabilities:
Contingent consideration	0	0
Level 2
Assets:
Cash and cash equivalents	0	0
Available for sale securities	0	0
Total	0	0
Liabilities:
Contingent consideration	0	0
Level 3
Assets:
Cash and cash equivalents	0	0
Available for sale securities	0	0
Total	0	0
Liabilities:
Contingent consideration	$ 180,200	$ 346,300