v3.3.1.900
Note 5 - Income Taxes (Details Textual) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Domestic Tax Authority [Member] | Earliest Tax Year [Member]        
Open Tax Year     2012  
Domestic Tax Authority [Member] | Latest Tax Year [Member]        
Open Tax Year     2014  
Effective Income Tax Rate Reconciliation, Percent 35.80% 37.20% 36.30% 36.10%
Unrecognized Tax Benefits $ 0.5   $ 0.5