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, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Earnings Per Share
Net income	$ 15,683	$ 11,307	$ 42,792	$ 36,652
Less: distributed earnings allocated to participating securities	(12)	(12)	(35)	(37)
Less: undistributed earnings allocated to participating securities	(59)	(46)	(158)	(151)
Net income available to common shareholders	$ 15,612	$ 11,249	$ 42,599	$ 36,464
Weighted-average shares outstanding	11,237,641	11,301,577	11,229,733	11,298,174
Effect of dilutive securities stock options or awards	24,642	10,971	24,282	9,260
Denominator for diluted earnings per share	11,262,283	11,312,548	11,254,015	11,307,434
Basic earnings per share available to common stockholders	$ 1.39	$ 1	$ 3.79	$ 3.23
Diluted earnings per share available to common stockholders	$ 1.39	$ 0.99	$ 3.79	$ 3.22