Loans and Allowance for Credit Losses - Gross Charge-offs by Loan Class and Year of Origination (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
2024	$ 6
2023	45
2022	26
2021	218
Prior	40
Financing Receivable, Allowance for Credit Loss, Writeoff, Total	335	$ 37
Residential Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
2021	97
Prior	35
Financing Receivable, Allowance for Credit Loss, Writeoff, Total	132	2
Construction Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
2021	111
Financing Receivable, Allowance for Credit Loss, Writeoff, Total	111
Consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
2024	6
2023	41
2022	26
2021	10
Prior	5
Financing Receivable, Allowance for Credit Loss, Writeoff, Total	88	$ 35
Commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023	4
Financing Receivable, Allowance for Credit Loss, Writeoff, Total	$ 4

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

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Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease.

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Amount, excluding accrued interest, of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease.

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Amount, excluding accrued interest, of writeoff of financing receivable originated two years before current fiscal year. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-79

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