Earnings Per Share - Schedule of computation of basic and diluted earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share
Net Income	$ 9,351	$ 11,458	$ 34,082	$ 33,491
Less: distributed earnings allocated to participating securities	(8)	(5)	(22)	(13)
Less: undistributed earnings allocated to participating securities	(33)	(35)	(118)	(91)
Net income available to common shareholders	$ 9,310	$ 11,418	$ 33,942	$ 33,387
Weighted-average common shares outstanding, including participating securities	9,060,272	9,004,034	8,948,856	9,073,545
Less: weighted-average participating securities outstanding (restricted shares)	(39,230)	(31,845)	(36,998)	(28,172)
Weighted-average shares outstanding	9,021,042	8,972,189	8,911,858	9,045,373
Effect of dilutive securities stock options or awards	23,004	4,026	18,488	2,579
Denominator for diluted earnings per share	9,044,046	8,976,215	8,930,346	9,047,952
Basic earnings per share available to common stockholders	$ 1.03	$ 1.27	$ 3.81	$ 3.69
Diluted earnings per share available to common stockholders	$ 1.03	$ 1.27	$ 3.80	$ 3.69