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, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Net income available to common shareholders	$ 2,116	$ 1,018	$ 7,024	$ 3,961
Weighted average common shares outstanding (in shares)	3,018,529	3,003,205	3,017,773	2,828,427
Basic income per share (in dollars per share)	$ 0.70	$ 0.34	$ 2.33	$ 1.40
Dilutive effect of restricted stock (in shares)	320
Total common shares and dilutive potential common shares (in shares)	3,018,849	3,003,205	3,017,773	2,828,427
Dilutive income per share (in dollars per share)	$ 0.70	$ 0.34	$ 2.33	$ 1.40