Note 14 - Parent Company Financial Statements - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Available-for-sale securities, fair value	$ 144,028	$ 142,086
Total assets	502,619	457,883
Shareholders’ equity	43,761	43,535	$ 43,793
Total liabilities & shareholders’ equity	502,619	457,883
Parent Company [Member]
Cash	46	36
Available-for-sale securities, fair value	1,622	1,651
Other assets	73	61
Investment in subsidiary	42,089	41,843
Total assets	43,830	43,591
Other liabilities	69	56
Shareholders’ equity	43,761	43,535
Total liabilities & shareholders’ equity	$ 43,830	$ 43,591