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Loans Receivable and Allowance for Credit Losses - Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	$ 588,666		$ 707,472
Allowance for credit losses	(7,187)	$ (7,795)	(7,305)	$ (14,984)	$ (14,989)	$ (15,925)
Loans receivable, net	581,479		700,167
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	360,802		419,489
Allowance for credit losses	(2,504)	(2,436)	(2,241)	(9,045)	(7,958)	(6,089)
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	83,672		92,215
Allowance for credit losses	(805)	(519)	(596)	(608)	(678)	(607)
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	123,359		129,608
Allowance for credit losses	(3,430)	(1,785)	(1,077)	(1,056)	(1,215)	(1,269)
Consumer and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	20,802		59,973
Allowance for credit losses	(448)	(3,050)	(3,386)	(4,273)	(5,133)	(7,843)
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	0		3,830
Allowance for credit losses	0	(5)	(5)	(2)	(5)	(4)
Construction to Permanent - CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, gross	31		2,357
Allowance for credit losses	$ 0	$ 0	$ 0	$ 0	$ 0	$ (113)

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Section 50
-Paragraph 5
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

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