Note 6 - 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, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Net income available to common shareholders	$ 1,440	$ 1,849	$ 2,943	$ 3,522
Weighted average common shares outstanding (in shares)	2,737,800	2,730,375	2,737,755	2,730,355
Basic income per share (in dollars per share)	$ 0.53	$ 0.68	$ 1.07	$ 1.29
Net income available to common shareholders	$ 1,440	$ 1,849	$ 2,943	$ 3,522
Dilutive effect of restricted stock (in shares)				23
Total common shares and dilutive potential common shares (in shares)	2,737,800	2,730,375	2,737,755	2,730,378
Dilutive income per share (in dollars per share)	$ 0.53	$ 0.68	$ 1.07	$ 1.29