Note 3 - Stock-based Compensation (Details) - Stock Option Activity: (USD $)	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2013	Jun. 30, 2013
Stock Option Activity: [Abstract]
Options outstanding at the beginning of period	26,240	22,697	22,697
Options outstanding at the beginning of period (in Dollars per share)	$ 12.19	$ 13.91	$ 13.91
Granted	10,000
Granted (in Dollars per share)	$ 16.00
Exercised	(13,543)
Exercised (in Dollars per share)	$ 12.13
Options outstanding at end of period	22,697	22,697	22,697
Options outstanding at end of period (in Dollars per share)	$ 13.91	$ 13.91	$ 13.91
Options exercisable at end of period	12,697	14,697