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, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Net income available to common shareholders	$ 566	$ 708	$ 2,189	$ 2,074
Weighted average common shares outstanding (in shares)	2,724,418	2,725,543	2,724,132	2,724,992
Basic income per share (in dollars per share)	$ 0.21	$ 0.26	$ 0.80	$ 0.76
Net income available to common shareholders	$ 566	$ 708	$ 2,189	$ 2,074
Weighted average common shares outstanding (in shares)	2,724,418	2,725,543	2,724,132	2,724,992
Dilutive effect of restricted stock (in shares)	30	83	25	137
Total common shares and dilutive potential common shares (in shares)	2,724,448	2,725,626	2,724,157	2,725,129
Dilutive income per share (in dollars per share)	$ 0.21	$ 0.26	$ 0.80	$ 0.76