5. Fair Value of Financial Instruments (Details) (USD $)	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Cash and cash equivalents	$ 670,400	$ 769,300	$ 763,500	$ 907,800
Available for sale securities	720,100	718,300
Total	1,390,500	1,487,600
Contingent consideration	107,400	107,400
Level 1
Cash and cash equivalents	670,400	769,300
Available for sale securities	720,100	718,300
Total	1,390,500	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	$ 107,400	$ 107,400