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, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Net income available to common shareholders	$ 1,018	$ 1,035	$ 3,961	$ 4,557
Weighted average common shares outstanding (in shares)	3,003,205	2,730,376	2,828,427	2,730,887
Basic income per share (in dollars per share)	$ 0.34	$ 0.38	$ 1.40	$ 1.67
Net income available to common shareholders	$ 1,018	$ 1,035	$ 3,961	$ 4,557
Dilutive effect of restricted stock (in shares)
Total common shares and dilutive potential common shares (in shares)	3,003,205	2,730,376	2,828,427	2,730,887
Dilutive income per share (in dollars per share)	$ 0.34	$ 0.38	$ 1.40	$ 1.67