Earnings Per Share - Computation (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
Composition of the weighted average common shares used in the basic and diluted earnings per share computation
Net income	$ 183	$ 1,061	$ 1,027	$ 824	$ 1,175	$ 1,160	$ 2,271	$ 3,159
Basic average common shares outstanding	12,643,435			14,318,839			13,024,076	14,310,484
Effect of dilutive securities	74,732						45,782
Dilutive average shares outstanding	12,718,167			14,318,839			13,069,858	14,310,484
Basic earnings per share	$ 0.01			$ 0.06			$ 0.17	$ 0.22
Diluted earnings per share	$ 0.01			$ 0.06			$ 0.17	$ 0.22