v3.4.0.3
Note 5 - Income Taxes (Details Textual) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Domestic Tax Authority [Member] | Earliest Tax Year [Member]        
Open Tax Year     2013  
Domestic Tax Authority [Member] | Latest Tax Year [Member]        
Open Tax Year     2015  
Effective Income Tax Rate Reconciliation, Percent 33.70% 35.20% 35.70% 35.80%
Unrecognized Tax Benefits $ 0.5   $ 0.5