5. Fair Value of Financial Instruments (Details) (USD $)	Mar. 31, 2013	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011
Cash and cash equivalents	$ 946,400	$ 769,300	$ 552,200	$ 907,800
Available for sale securities	729,500	718,300
Total	1,675,900	1,487,600
Contingent consideration	81,500	107,400
Level 1
Cash and cash equivalents	946,400	769,300
Available for sale securities	729,500	718,300
Total	1,675,900	1,487,600
Contingent consideration
Level 2
Cash and cash equivalents
Available for sale securities
Total
Contingent consideration
Level 3
Cash and cash equivalents
Available for sale securities
Total
Contingent consideration	$ 81,500	$ 107,400