Earnings Per Share - Schedule of computation of basic and diluted earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share
Net Income													$ 50,182	$ 39,237	$ 47,169
Less: distributed earnings allocated to participating securities													(49)	(42)	(30)
Less: undistributed earnings allocated to participating securities													(208)	(150)	(165)
Net income available to common shareholders													$ 49,925	$ 39,045	$ 46,974
Weighted-average shares outstanding													11,292,634	10,124,766	8,994,022
Effect of dilutive securities stock options or awards													8,645	17,033	17,122
Denominator for diluted earnings per share													11,301,279	10,141,799	9,011,144
Basic earnings per share available to common stockholders	$ 1.19	$ 1.00	$ 1.08	$ 1.16	$ 1.37	$ 0.22	$ 1.26	$ 1.04	$ 1.41	$ 1.03	$ 1.35	$ 1.43	$ 4.42	$ 3.86	$ 5.22
Diluted earnings per share available to common stockholders	$ 1.19	$ 0.99	$ 1.07	$ 1.16	$ 1.37	$ 0.22	$ 1.26	$ 1.04	$ 1.41	$ 1.03	$ 1.34	$ 1.43	$ 4.42	$ 3.85	$ 5.21