Note 10 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Mar. 31, 2024	Mar. 31, 2023
Net income (loss)	$ (35)	$ 1,229	$ (176)	$ 1,620	$ 847	$ 53	$ 1,018	$ 2,520
Basic weighted average number of common shares outstanding (in shares)	14,077,042			14,747,537			14,278,691	14,862,893
Stock options (in shares)	0			100			86	295
Diluted (in shares)	14,077,042			14,747,637			14,278,777	14,863,188
Basic Net Income (Loss) per share (in dollars per share)	$ (0)			$ 0.11			$ 0.07	$ 0.17
Diluted Net Income (Loss) per share (in dollars per share)	$ (0)			$ 0.11			$ 0.07	$ 0.17