Note 8 - Short-term Borrowings - Schedule of Repurchase Agreements (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Securities, available-for-sale	$ 296,347	$ 207,760
Repurchase Agreements	20,025	12,203
Asset Pledged as Collateral [Member] | Securities Sold under Agreements to Repurchase [Member]
Securities, available-for-sale	21,967	13,302
US Government-sponsored Enterprises Debt Securities [Member]
Securities, available-for-sale	26,265	15,033
US Government-sponsored Enterprises Debt Securities [Member] | Asset Pledged as Collateral [Member] | Securities Sold under Agreements to Repurchase [Member]
Securities, available-for-sale	3,331	767
Residential Mortgage-Backed Securities [Member]
Securities, available-for-sale	102,183	90,517
Residential Mortgage-Backed Securities [Member] | Asset Pledged as Collateral [Member] | Securities Sold under Agreements to Repurchase [Member]
Securities, available-for-sale	11,954	6,493
Commercial Mortgage-Backed Securities [Member]
Securities, available-for-sale	7,301	8,845
Commercial Mortgage-Backed Securities [Member] | Asset Pledged as Collateral [Member] | Securities Sold under Agreements to Repurchase [Member]
Securities, available-for-sale	$ 6,682	$ 6,042