Note 7 - Share-based Compensation (Details) - Stock Option Activity (USD $)	3 Months Ended
	Sep. 30, 2014
Stock Option Activity [Abstract]
Balance at June 30, 2014	2,463,369
Balance at June 30, 2014	$ 9.09
Granted	225,000
Granted	$ 2.39
Forfeited or expired	(417,904)
Forfeited or expired	$ 4.38
Balance at September 30, 2014	2,270,465
Balance at September 30, 2014	$ 9.30
Balance at September 30, 2014	7 years 222 days