Loans Receivable and Allowance for Credit Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Allowance for Loan and Lease Losses [Roll Forward]
Balance	$ 14,989	$ 24,098	$ 15,925	$ 10,310	$ 10,310
Charge-offs	(1,512)	(3,548)	(6,877)	(8,016)	(18,417)
Recoveries	423	318	1,066	778
Provisions (credits)	1,084	4,800	4,870	9,595
Balance	14,984	25,668	14,984	25,668	15,925
Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance				13,001	13,001
Unfunded Loan Commitment
Allowance for Loan and Lease Losses [Roll Forward]
Provisions (credits)	(58)	(112)	(94)	(1,400)
Commercial Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance	7,958	10,039	6,089	6,966	6,966
Charge-offs	(124)	0	(282)	0	(6,346)
Recoveries	0	0	0	0
Provisions (credits)	1,211	3,321	3,238	4,768
Balance	9,045	13,360	9,045	13,360	6,089
Commercial Real Estate \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance				1,626	1,626
Residential Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance	678	1,027	607	665	665
Charge-offs	0	(113)	(21)	(113)	(515)
Recoveries	0	3	0	14
Provisions (credits)	(70)	171	22	333
Balance	608	1,088	608	1,088	607
Residential Real Estate \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance				189	189
Commercial and Industrial
Allowance for Loan and Lease Losses [Roll Forward]
Balance	1,215	1,673	1,269	1,403	1,403
Charge-offs	(122)	(423)	(936)	(429)	(927)
Recoveries	160	9	238	25
Provisions (credits)	(197)	149	485	190
Balance	1,056	1,408	1,056	1,408	1,269
Commercial and Industrial \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance				219	219
Consumer and Other
Allowance for Loan and Lease Losses [Roll Forward]
Balance	5,133	11,275	7,843	1,207	1,207
Charge-offs	(1,266)	(3,012)	(5,638)	(7,324)	(10,479)
Recoveries	263	306	828	739
Provisions (credits)	143	1,127	1,240	4,097
Balance	4,273	9,696	4,273	9,696	7,843
Consumer and Other \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance				10,977	10,977
Construction
Allowance for Loan and Lease Losses [Roll Forward]
Balance	5	33	4	24	24
Charge-offs	0	0	0	(150)	(150)
Recoveries	0	0	0	0
Provisions (credits)	(3)	(31)	(2)	132
Balance	2	2	2	2	4
Construction \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance				(4)	(4)
Construction to Permanent - CRE
Allowance for Loan and Lease Losses [Roll Forward]
Balance	0	51	113	10	10
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provisions (credits)	0	63	(113)	75
Balance	0	114	0	114	113
Construction to Permanent - CRE \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance				29	29
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Balance			0	35	35
Charge-offs			0	0
Recoveries			0	0
Provisions (credits)			0	0
Balance	$ 0	$ 0	$ 0	0	0
Unallocated \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Balance				$ (35)	$ (35)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

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

+ Details

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- Definition

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

+ References

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

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- Definition

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

+ References

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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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ 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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