Loans and Allowance for Credit Losses - Credit risk profile based on rating category and year of origination (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Amount of loan relationships subject to annual credit analysis	$ 4,000
Loan relationships that are subject to independent annual review	1,000
2024 / 2023	737,190	$ 1,112,842
2023 / 2022	953,922	969,065
2022 / 2021	833,645	623,440
2021 / 2020	518,406	213,074
2020 / 2019	171,485	108,106
Prior	200,743	195,293
Revolving loans	434,644	397,377
Total	3,850,035	3,619,197
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	720,679	1,089,767
2023 / 2022	926,158	934,545
2022 / 2021	802,592	619,444
2021 / 2020	515,857	208,612
2020 / 2019	166,539	107,260
Prior	196,262	191,942
Revolving loans	432,843	393,419
Total	3,760,930	3,544,989
Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	8,921	10,385
2023 / 2022	26,306	6,729
2022 / 2021	2,049	932
2021 / 2020	2,063	3,990
2020 / 2019	4,800	198
Prior	2,963	144
Revolving loans	1,141	2,554
Total	48,243	24,932
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023		2,940
Total		2,940
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	7,590	9,750
2023 / 2022	1,458	27,791
2022 / 2021	29,004	3,064
2021 / 2020	486	472
2020 / 2019	146	648
Prior	1,518	3,207
Revolving loans	660	1,404
Total	40,862	46,336
Residential Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	191,897	330,193
2023 / 2022	309,735	314,305
2022 / 2021	275,543	253,203
2021 / 2020	217,940	103,843
2020 / 2019	86,363	25,849
Prior	93,508	96,919
Revolving loans	10,706	9,105
Total	1,185,692	1,133,417
Residential Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	191,083	328,142
2023 / 2022	308,691	312,853
2022 / 2021	275,456	252,077
2021 / 2020	217,361	103,735
2020 / 2019	86,265	25,651
Prior	93,234	96,035
Revolving loans	10,706	9,100
Total	1,182,796	1,127,593
Residential Real Estate | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	814	1,214
2023 / 2022	247	1,136
2022 / 2021	87	616
2021 / 2020	396	108
2020 / 2019	98	198
Prior	23	27
Revolving loans		5
Total	1,665	3,304
Residential Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023		837
2023 / 2022	797	316
2022 / 2021		510
2021 / 2020	183
Prior	251	857
Total	1,231	2,520
Construction Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	76,071	125,089
2023 / 2022	134,887	50,690
2022 / 2021	18,130	10,946
2021 / 2020		3,190
Revolving loans		941
Total	229,088	190,856
Construction Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	76,007	124,479
2023 / 2022	131,981	50,011
2022 / 2021	18,130	10,946
2021 / 2020		3,190
Revolving loans		941
Total	226,118	189,567
Construction Real Estate | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	64	280
2023 / 2022	2,906
Total	2,970	280
Construction Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023		330
2023 / 2022		679
Total		1,009
Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	265,181	481,395
2023 / 2022	412,708	505,987
2022 / 2021	478,895	282,509
2021 / 2020	245,016	93,439
2020 / 2019	77,891	75,126
Prior	94,245	85,723
Revolving loans	48,429	38,200
Total	1,622,365	1,562,379
Commercial Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	251,759	462,643
2023 / 2022	389,523	474,140
2022 / 2021	449,298	279,921
2021 / 2020	243,066	89,272
2020 / 2019	73,189	74,653
Prior	91,232	83,871
Revolving loans	47,322	37,443
Total	1,545,389	1,501,943
Commercial Real Estate | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	6,762	8,122
2023 / 2022	22,825	5,382
2022 / 2021	1,715	163
2021 / 2020	1,667	3,879
2020 / 2019	4,702
Prior	2,585	117
Revolving loans	519
Total	40,775	17,663
Commercial Real Estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023		2,940
Total		2,940
Commercial Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	6,660	7,690
2023 / 2022	360	26,465
2022 / 2021	27,882	2,425
2021 / 2020	283	288
2020 / 2019		473
Prior	428	1,735
Revolving loans	588	757
Total	36,201	39,833
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	33,371	36,107
2023 / 2022	18,311	14,532
2022 / 2021	6,888	5,509
2021 / 2020	2,947	1,692
2020 / 2019	859	717
Prior	1,348	1,420
Revolving loans	80,874	73,538
Total	144,598	133,515
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	33,371	36,003
2023 / 2022	18,309	14,530
2022 / 2021	6,829	5,446
2021 / 2020	2,944	1,692
2020 / 2019	829	717
Prior	1,348	1,379
Revolving loans	80,852	73,225
Total	144,482	132,992
Consumer | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023		71
2022 / 2021		62
Total		133
Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023		33
2023 / 2022	2	2
2022 / 2021	59	1
2021 / 2020	3
2020 / 2019	30
Prior		41
Revolving loans	22	313
Total	116	390
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	170,670	140,058
2023 / 2022	78,281	83,551
2022 / 2021	54,189	71,273
2021 / 2020	52,503	10,910
2020 / 2019	6,372	6,414
Prior	11,642	11,231
Revolving loans	294,635	275,593
Total	668,292	599,030
Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	168,459	138,500
2023 / 2022	77,654	83,011
2022 / 2021	52,879	71,054
2021 / 2020	52,486	10,723
2020 / 2019	6,256	6,239
Prior	10,448	10,657
Revolving loans	293,963	272,710
Total	662,145	592,894
Commercial | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	1,281	698
2023 / 2022	328	211
2022 / 2021	247	91
2021 / 2020		3
Prior	355
Revolving loans	622	2,549
Total	2,833	3,552
Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2024 / 2023	930	860
2023 / 2022	299	329
2022 / 2021	1,063	128
2021 / 2020	17	184
2020 / 2019	116	175
Prior	839	574
Revolving loans	50	334
Total	$ 3,314	$ 2,584