Note 5 - Share-based Compensation (Details) - Fair Value Assumptions (USD $)	3 Months Ended	9 Months Ended
	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013
Fair Value Assumptions [Abstract]
Weighted-average risk-free interest rate	1.60%	1.50%	0.65%
Expected weighted-average volatility	0.78%	0.78%	0.84%
Expected weighted-average life of options (years)	6 years	6 years	5 years
Weighted-average fair value of options granted (in Dollars per share)	$ 4.22	$ 3.12	$ 2.72