Fair Value of Financial Instruments (Details) (USD $)	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Cash and Cash Equivalents, Carrying Amount	$ 6,273,015	$ 6,881,093	$ 9,900,605
Trade accounts receivable, Carrying amount	3,158,084	2,085,972
Trade accounts payable, Carrying amount	1,507,695	1,110,694
Notes receivable short term, Carrying amount	198,117	210,000
Notes receivable long term (included in other assets) Carrying amount	0	440,000
Cash and Cash Equivalents, Fair value	6,273,015	6,881,093
Trade accounts receivable, Fair value	3,158,084	2,294,254
Trade accounts payable, Fair value	1,507,695	1,336,558
Notes receivable short term, Fair value	198,117	210,000
Notes receivable long term (included in other assets) Fair value	$ 0	$ 440,000