Loans and Allowance for Credit Losses - Balance and activity in the Allowance for credit losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Allowance for credit losses:
Balance, beginning of period	$ 47,820	$ 33,192
Initial ACL on PCD loans	3,600	17,100	$ 1,500
Provision (benefit) charged to expense	6,625	14,131	(66)
Losses charged off	(2,055)	(673)	(153)
Recoveries	126	49	69
Balance, end of period	52,516	47,820	33,192
Total allowance for credit losses on loans				$ 33,222
Residential Real Estate
Allowance for credit losses:
Balance, beginning of period	15,641	8,908
Provision (benefit) charged to expense	713	6,655	(2,238)
Losses charged off	(515)	(19)	(72)
Recoveries		1	3
Balance, end of period	15,839	15,641	8,908
Total allowance for credit losses on loans				11,192
Construction Real Estate
Allowance for credit losses:
Balance, beginning of period	2,664	2,220
Provision (benefit) charged to expense	(174)	432	46
Losses charged off	(289)
Balance, end of period	2,201	2,664	2,220
Total allowance for credit losses on loans				2,170
Commercial Real Estate
Allowance for credit losses:
Balance, beginning of period	22,838	16,838
Provision (benefit) charged to expense	4,100	5,605	2,251
Losses charged off	(496)	(245)
Recoveries	18	12
Balance, end of period	26,460	22,838	16,838
Total allowance for credit losses on loans				14,535
Consumer
Allowance for credit losses:
Balance, beginning of period	909	710
Provision (benefit) charged to expense	482	334	(205)
Losses charged off	(360)	(327)	(65)
Recoveries	71	28	64
Balance, end of period	1,102	909	710
Total allowance for credit losses on loans				916
Commercial
Allowance for credit losses:
Balance, beginning of period	5,768	4,516
Provision (benefit) charged to expense	1,504	1,105	80
Losses charged off	(395)	(82)	(16)
Recoveries	37	8	2
Balance, end of period	6,914	5,768	4,516
Total allowance for credit losses on loans				$ 4,409
Accounting Standards Update 2016-13 | Impact of adoption ASU
Allowance for credit losses:
Balance, beginning of period		120
Balance, end of period			120
Accounting Standards Update 2016-13 | Residential Real Estate | Impact of adoption ASU
Allowance for credit losses:
Balance, beginning of period		23
Balance, end of period			23
Accounting Standards Update 2016-13 | Construction Real Estate | Impact of adoption ASU
Allowance for credit losses:
Balance, beginning of period		4
Balance, end of period			4
Accounting Standards Update 2016-13 | Commercial Real Estate | Impact of adoption ASU
Allowance for credit losses:
Balance, beginning of period		52
Balance, end of period			52
Accounting Standards Update 2016-13 | Commercial | Impact of adoption ASU
Allowance for credit losses:
Balance, beginning of period		41
Balance, end of period			$ 41
Accounting Standards Update 2022-02 | Impact of adoption ASU
Allowance for credit losses:
Balance, beginning of period	1,121
Balance, end of period		1,121
Accounting Standards Update 2022-02 | Residential Real Estate | Impact of adoption ASU
Allowance for credit losses:
Balance, beginning of period	96
Balance, end of period		96
Accounting Standards Update 2022-02 | Construction Real Estate | Impact of adoption ASU
Allowance for credit losses:
Balance, beginning of period	12
Balance, end of period		12
Accounting Standards Update 2022-02 | Commercial Real Estate | Impact of adoption ASU
Allowance for credit losses:
Balance, beginning of period	628
Balance, end of period		628
Accounting Standards Update 2022-02 | Consumer | Impact of adoption ASU
Allowance for credit losses:
Balance, beginning of period	164
Balance, end of period		164
Accounting Standards Update 2022-02 | Commercial | Impact of adoption ASU
Allowance for credit losses:
Balance, beginning of period	$ 221
Balance, end of period		$ 221