Note 8 - Short-term Borrowings - Schedule of Repurchase Agreements (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Pledged Financial Instruments, Securities for Repurchase Agreements	$ 7,039	$ 4,936
Repurchase Agreements	6,943	3,686
US Government-sponsored Enterprises Debt Securities [Member]
Pledged Financial Instruments, Securities for Repurchase Agreements	1,031	998
Residential Mortgage Backed Securities [Member]
Pledged Financial Instruments, Securities for Repurchase Agreements	2,720	3,938
Commercial Mortgage Backed Securities [Member]
Pledged Financial Instruments, Securities for Repurchase Agreements	$ 3,288