Condensed Parent Company Only Financial Statements - Cash Flows (Details) - USD ($) $ 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
Net Income (Loss)	$ 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
NET CASH PROVIDED BY OPERATING ACTIVITIES													70,268	62,023	67,342
NET CASH USED IN INVESTING ACTIVITIES													(245,735)	(213,405)	(303,928)
Dividends on common stock													9,526	8,632	7,194
Exercise of stock options													391
NET CASH PROVIDED BY FINANCING ACTIVITIES													182,392	118,552	199,803
Increase (decrease) in cash and cash equivalents													6,925	(32,830)	(36,783)
Cash and cash equivalents at beginning of period				53,979									53,979
Cash and cash equivalents at end of period	60,904				53,979								60,904	53,979
Parent Company
Net Income (Loss)													50,182	39,237	47,169
Equity in undistributed income of the Bank													(36,330)	4,867	(17,644)
Other adjustments, net													56	388	(698)
NET CASH PROVIDED BY OPERATING ACTIVITIES													13,908	44,492	28,827
Investments in Bank subsidiaries														(31,382)	(8,024)
NET CASH USED IN INVESTING ACTIVITIES														(31,382)	(8,024)
Dividends on common stock													(9,526)	(8,632)	(7,194)
Payments to acquire treasury stock													(3,857)		(5,838)
NET CASH PROVIDED BY FINANCING ACTIVITIES													(13,383)	(8,632)	(13,032)
Increase (decrease) in cash and cash equivalents													525	4,478	7,771
Cash and cash equivalents at beginning of period				$ 13,442				$ 8,964				$ 1,193	13,442	8,964	1,193
Cash and cash equivalents at end of period	$ 13,967				$ 13,442				$ 8,964				$ 13,967	$ 13,442	$ 8,964