Note 5 - 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, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Net income available to common shareholders	$ 1,035	$ 913	$ 4,557	$ 2,499
Weighted average common shares outstanding (in shares)	2,730,376	2,727,837	2,730,887	2,726,538
Basic income per share (in dollars per share)	$ 0.38	$ 0.33	$ 1.67	$ 0.92
Net income available to common shareholders	$ 1,035	$ 913	$ 4,557	$ 2,499
Weighted average common shares outstanding (in shares)	2,730,429	2,727,837	2,730,850	2,726,538
Dilutive effect of restricted stock (in shares)
Total common shares and dilutive potential common shares (in shares)	2,730,429	2,727,837	2,730,850	2,726,538
Dilutive income per share (in dollars per share)	$ 0.38	$ 0.33	$ 1.67	$ 0.92