Quarterly Financial Data (Unaudited) - Summary of Quarterly Operating Data (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
Quarterly Financial Data (Unaudited)
Interest income	$ 64,667	$ 64,025	$ 61,576	$ 58,107	$ 54,283	$ 48,286	$ 38,851	$ 34,996	$ 31,572	$ 28,339	$ 28,096	$ 28,860	$ 248,375	$ 176,416	$ 116,867
Interest expense	29,572	29,516	27,090	22,714	18,065	14,519	10,600	6,487	3,814	3,225	3,038	3,223	108,892	49,671	13,300
NET INTEREST INCOME	35,095	34,509	34,486	35,393	36,218	33,767	28,251	28,509	27,758	25,114	25,058	25,637	139,483	126,745	103,567
Provision (benefit) for credit / loan losses	900	900	900	900	795	10,072	1,138	5,056	240	1,552		(305)	3,600	17,061	1,487
Noninterest income	7,767	5,584	5,640	5,853	8,951	6,284	5,456	5,513	6,499	4,904	5,285	4,515	24,844	26,204	21,203
Noninterest expense	25,002	25,049	23,860	23,706	24,875	26,992	17,638	16,920	17,331	16,757	15,070	14,221	97,617	86,425	63,379
Income before income taxes	16,960	14,144	15,366	16,640	19,499	2,987	14,931	12,046	16,686	11,709	15,273	16,236
Income tax expense	3,430	2,837	3,173	3,488	3,939	578	3,267	2,442	3,602	2,358	3,288	3,487	12,928	10,226	12,735
NET INCOME	$ 13,530	$ 11,307	$ 12,193	$ 13,152	$ 15,560	$ 2,409	$ 11,664	$ 9,604	$ 13,084	$ 9,351	$ 11,985	$ 12,749	$ 50,182	$ 39,237	$ 47,169
Basic earnings per share	$ 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	$ 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