Note 6 - Short-term Borrowings - Summary of Short-term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Short-term borrowings	$ 23,986	$ 19,129
Average balance during the year	21,053	21,196
Maximum month-end balance	$ 28,073	$ 25,759
Average interest rate during the year	0.43%	0.18%
Weighted average rate, June 30	0.82%	0.20%