Loans and Allowance for Credit Losses - Allowance for off-balance credit exposure (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	$ 6,288	$ 3,358
Provision (benefit) charged to expense	(670)	806
Balance, end of period	5,618	4,164
Residential Real Estate
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	71	58
Provision (benefit) charged to expense	7	135
Balance, end of period	78	193
Construction Real Estate
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	4,809	2,178
Provision (benefit) charged to expense	(616)	719
Balance, end of period	4,193	2,897
Commercial Real Estate
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	475	421
Provision (benefit) charged to expense	(10)	107
Balance, end of period	465	528
Consumer loans
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	73	61
Provision (benefit) charged to expense	(2)
Balance, end of period	71	61
Commercial loans
Allowance for off-balance sheet credit exposure:
Balance, beginning of period	860	640
Provision (benefit) charged to expense	(49)	(155)
Balance, end of period	$ 811	$ 485

Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482454/460-10-45-1

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Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

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