Note 6 - Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			0 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Scenario, Forecast [Member] June 30, 2014 [Member]	Jun. 30, 2012 Scenario, Forecast [Member] June 30, 2015 [Member]	Jun. 30, 2013 Royalty Agreements [Member]
Note 6 - Intangible Assets (Details) [Line Items]
Amortization	$ 1.2	$ 1.3	$ 1.3	$ 0.5	$ 0.1
Finite-Lived Intangible Assets, Remaining Amortization Period						1 year