Note 15 - Parent Company Financial Statements - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Available-for-sale securities, fair value	$ 144,010	$ 144,028
Total assets	553,936	502,619
Shareholders’ equity	51,166	43,761	$ 43,535
Total liabilities & shareholders’ equity	553,936	502,619
Parent Company [Member]
Cash	38	46
Available-for-sale securities, fair value	1,646	1,622
Other assets	75	73
Investment in subsidiary	49,545	42,089
Total assets	51,304	43,830
Other liabilities	138	69
Shareholders’ equity	51,166	43,761
Total liabilities & shareholders’ equity	$ 51,304	$ 43,830