Note 8 - Short-term Borrowings - Schedule of Repurchase Agreements (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Pledged Financial Instruments, Securities for Repurchase Agreements	$ 13,302	$ 7,039
Repurchase Agreements	12,203	6,943
US Government-sponsored Enterprises Debt Securities [Member]
Pledged Financial Instruments, Securities for Repurchase Agreements	767	1,031
Residential Mortgage Backed Securities [Member]
Pledged Financial Instruments, Securities for Repurchase Agreements	6,493	2,720
Commercial Mortgage Backed Securities [Member]
Pledged Financial Instruments, Securities for Repurchase Agreements	$ 6,042	$ 3,288