Note 5 - Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Net income available to common shareholders	$ 657	$ 722	$ 1,586	$ 1,623
Weighted average common shares outstanding (in shares)	2,727,666	2,724,061	2,725,859	2,723,988
Basic income per share (in dollars per share)	$ 0.24	$ 0.27	$ 0.58	$ 0.60
Net income available to common shareholders	$ 657	$ 722	$ 1,586	$ 1,623
Weighted average common shares outstanding (in shares)	2,727,666	2,724,061	2,725,859	2,723,988
Dilutive effect of restricted stock (in shares)		19		13
Total common shares and dilutive potential common shares (in shares)	2,727,666	2,724,080	2,725,859	2,724,001
Dilutive income per share (in dollars per share)	$ 0.24	$ 0.27	$ 0.58	$ 0.60