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, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Net income available to common shareholders	$ 2,585	$ 2,116	$ 8,412	$ 7,024
Weighted average common shares outstanding (in shares)	3,039,049	3,018,529	3,036,473	3,017,773
Basic income per share (in dollars per share)	$ 0.85	$ 0.70	$ 2.77	$ 2.33
Dilutive effect of restricted stock (in shares)	503	320	275	0
Total common shares and dilutive potential common shares (in shares)	3,039,552	3,018,849	3,036,748	3,017,773
Dilutive income per share (in dollars per share)	$ 0.85	$ 0.70	$ 2.77	$ 2.33