Earnings Per Share - Computation (Details) $ / shares in Units, $ in Thousands, $ in Thousands	3 Months Ended						6 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2022 USN ($) shares	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2021 USN ($) shares	Sep. 30, 2021 USD ($)	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2022 USN ($) shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2021 USN ($) shares
Composition of the weighted average common shares used in the basic and diluted earnings per share computation
Net income	$ 1,061	$ 1,061	$ 1,027	$ 1,175	$ 1,175	$ 1,160	$ 2,088	$ 2,088	$ 2,335	$ 2,335
Basic average common shares outstanding	12,985,244	12,985,244		14,310,839	14,310,839		13,210,259	13,210,259	14,306,398	14,306,398
Effect of dilutive securities	44,892	44,892					31,303	31,303
Dilutive average shares outstanding	13,030,136	13,030,136		14,310,839	14,310,839		13,241,562	13,241,562	14,306,398	14,306,398
Basic earnings per share | $ / shares	$ 0.08			$ 0.08			$ 0.16		$ 0.16
Diluted earnings per share | $ / shares	$ 0.08			$ 0.08			$ 0.16		$ 0.16