Note 13 - Equity Transactions and Stock-based Compensation - Summary of the Company's Stock Option Activity, and Related Information (Details) - $ / shares	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Outstanding as of July 1, 2013 (in shares)	1,724,520	2,798,838
Outstanding as of July 1, 2013 (in dollars per share)	$ 4.07	$ 5.72
Granted (in dollars per share)	$ 0.09
Exercised (in shares)		(25,000)
Exercised (in dollars per share)		$ 0.14
Terminated (in shares)	(18,000)	(73,000)
Terminated (in dollars per share)	$ 1.11	$ 2.31
Expired (in shares)	(881,570)	(976,318)
Expired (in dollars per share)	$ 6.36	$ 9.04
Outstanding as of June 30, 2014 (in shares)	3,072,950	1,724,520
Outstanding as of June 30, 2014 (in dollars per share)	$ 0.52	$ 4.07
Granted (in shares)	2,248,000
Granted (in dollars per share)	$ 0.09
Exercised (in dollars per share)		$ 0.14
Terminated (in dollars per share)	$ 1.11	2.31
Expired (in dollars per share)	$ 6.36	$ 9.04
Exercisable at June 30, 2014 (in shares)	2,164,550	1,724,520
Exercisable at June 30, 2014 (in dollars per share)	$ 0.70	$ 4.07