Note 5 - Fair Value (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Jun. 30, 2020
Impaired Financing Receivable, Related Allowance	$ 0		$ 0
Other Real Estate Owned, Fair Value Disclosure	0			$ 0
Fair Value, Nonrecurring [Member] | Impaired Loans [Member]
Impaired Financing Receivable, Related Allowance	0		$ 0
Allowance for Loan and Lease Losses, Period Increase (Decrease), Total	$ 0	$ 0