Condensed Parent Company Only Financial Statements - Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	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, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Net Income (Loss)	$ 15,560	$ 2,409	$ 11,664	$ 9,604	$ 13,084	$ 9,351	$ 11,985	$ 12,749	$ 13,688	$ 11,458	$ 12,048	$ 9,986	$ 39,237	$ 47,169	$ 47,180
NET CASH PROVIDED BY OPERATING ACTIVITIES													62,023	67,342	51,762
NET CASH USED IN INVESTING ACTIVITIES													(213,405)	(303,928)	(101,918)
Dividends on common stock													8,632	7,194	5,598
NET CASH PROVIDED BY FINANCING ACTIVITIES													118,552	199,803	119,503
(Decrease) increase in cash and cash equivalents													(32,830)	(36,783)	69,347
Cash and cash equivalents at beginning of period				86,792									86,792
Cash and cash equivalents at end of period	53,979				86,792								53,979	86,792
Parent Company
Net Income (Loss)													39,237	47,169	47,180
Equity in undistributed income of the Bank													4,867	(17,644)	(36,065)
Other adjustments, net													388	(698)	(559)
NET CASH PROVIDED BY OPERATING ACTIVITIES													44,492	28,827	10,556
Investments in Bank subsidiaries													(31,382)	(8,024)
NET CASH USED IN INVESTING ACTIVITIES													(31,382)	(8,024)
Dividends on common stock													(8,632)	(7,194)	(5,598)
Payments to acquire treasury stock														(5,838)	(8,341)
NET CASH PROVIDED BY FINANCING ACTIVITIES													(8,632)	(13,032)	(13,939)
(Decrease) increase in cash and cash equivalents													4,478	7,771	(3,383)
Cash and cash equivalents at beginning of period				$ 8,964				$ 1,193				$ 4,576	8,964	1,193	4,576
Cash and cash equivalents at end of period	$ 13,442				$ 8,964				$ 1,193				$ 13,442	$ 8,964	$ 1,193