Note 10 - Federal Home Loan Bank (FHLB) Advances - Schedule of Contractual Maturities of Federal Home Loan Bank Long-term Advances (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Jun. 30, 2021
Federal Home Loan Bank advances: long-term		$ 166,823	$ 148,093
Fixed Debt [Member]
Federal Home Loan Bank advances: long-term		$ 5,000	10,000
Fixed Debt [Member] | Weighted Average [Member]
Interest rate	[1]	3.09%
Fixed Debt [Member] | Minimum [Member]
Interest rate		2.95%
Fixed Debt [Member] | Maximum [Member]
Interest rate		3.09%
Adjustable Debt [Member]
Federal Home Loan Bank advances: long-term		$ 0	25,000
Adjustable Debt [Member] | Minimum [Member]
Interest rate		0.29%
Adjustable Debt [Member] | Maximum [Member]
Interest rate		0.36%
Federal Home Loan Bank Advances [Member]
Federal Home Loan Bank advances: long-term		$ 5,000	$ 35,000
Federal Home Loan Bank Advances [Member] | Weighted Average [Member]
Interest rate		3.09%

[1] As of March 31, 2022