Note 16 - Parent Company Financial Statements - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Available-for-sale securities, fair value	$ 143,918	$ 144,010
Total assets	740,820	553,936
Shareholders’ equity	63,240	51,166	$ 43,761
Total liabilities & shareholders’ equity	740,820	553,936
Parent Company [Member]
Cash	258	38
Available-for-sale securities, fair value		1,646
Other assets	274	75
Investment in subsidiary	62,853	49,545
Total assets	63,385	51,304
Other liabilities	145	138
Shareholders’ equity	63,240	51,166
Total liabilities & shareholders’ equity	$ 63,385	$ 51,304