Note 6 - Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Net income available to common shareholders	$ 2,636	$ 2,585	$ 7,980	$ 8,412
Weighted average common shares outstanding (in shares)	3,078,595	3,039,049	3,072,336	3,036,473
Basic income per share (in dollars per share)	$ 0.86	$ 0.85	$ 2.60	$ 2.77
Dilutive effect of restricted stock (in shares)	1,218	503	0	275
Total common shares and dilutive potential common shares (in shares)	3,079,813	3,039,552	3,072,336	3,036,748
Dilutive income per share (in dollars per share)	$ 0.86	$ 0.85	$ 2.60	$ 2.77