Note 8 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2023	Mar. 31, 2022
Statement [Line Items]
Net income	$ 1,640	$ 869	$ 107	$ (846)	$ 3,590	$ 2,390	$ 2,616	$ 5,134
Basic weighted average number of common shares outstanding (in shares)	14,747,537			15,010,630			14,862,893	15,020,920
Stock options (in shares)	100			952			295	1,023
Diluted (in shares)	14,747,637			15,011,582			14,863,188	15,021,943
Basic Net Income (Loss) per share (in dollars per share)	$ 0.11			$ (0.06)			$ 0.18	$ 0.34
Diluted Net Income (Loss) per share (in dollars per share)	$ 0.11			$ (0.06)			$ 0.18	$ 0.34