Consolidated Balance Sheets (Parentheticals) - USD ($) $ / shares in Thousands, $ in Thousands	Jun. 30, 2023	Jun. 30, 2022
Held-to-maturity securities, fair value	$ 6,294	$ 7,831
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	350,000	350,000
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	8,500,000	8,500,000
Common stock, shares issued (in shares)	3,144,739	3,132,056
Treasury stock, shares (in shares)	48,639	75,382