Loans and Allowance for Credit Losses on Loans - Schedule of Activity in Allowance for Credit Losses on Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Analysis of allowance for loan losses
Beginning balance	$ 20,802	$ 17,702	$ 19,241	$ 16,123
Impact of CECL adoption			1,924
Provision for (reversal of) credit losses	1,303	662	1,045	2,204
Charge-offs	(492)	0	(628)	(32)
Recoveries	4	5	35	74
Ending balance	21,617	18,369	21,617	18,369
Provision for credit losses			(1,021)	(1,999)
Uncollectible Accrued Interest Receivable
Analysis of allowance for loan losses
Provision for credit losses				(205)
Commercial Real Estate
Analysis of allowance for loan losses
Beginning balance	6,784	7,743	6,951	8,150
Impact of CECL adoption			875
Provision for (reversal of) credit losses	1,171	(895)	220	(1,302)
Charge-offs	(457)	0	(548)	0
Recoveries	0	0	0	0
Ending balance	7,498	6,848	7,498	6,848
SBA—real estate
Analysis of allowance for loan losses
Beginning balance	1,218	1,800	1,607	2,022
Impact of CECL adoption			(238)
Provision for (reversal of) credit losses	34	(261)	(106)	(476)
Charge-offs	(35)	0	(46)	(14)
Recoveries	0	0	0	7
Ending balance	1,217	1,539	1,217	1,539
SBA—non-real estate
Analysis of allowance for loan losses
Beginning balance	55	135	207	199
Impact of CECL adoption			(142)
Provision for (reversal of) credit losses	91	7	84	(100)
Charge-offs	0	0	(34)	(18)
Recoveries	4	5	35	66
Ending balance	150	147	150	147
C&I
Analysis of allowance for loan losses
Beginning balance	1,270	2,102	1,643	2,848
Impact of CECL adoption			(320)
Provision for (reversal of) credit losses	(115)	291	(168)	(455)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	1,155	2,393	1,155	2,393
Home mortgage
Analysis of allowance for loan losses
Beginning balance	11,472	5,913	8,826	2,891
Impact of CECL adoption			1,753
Provision for (reversal of) credit losses	125	1,521	1,018	4,543
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	11,597	7,434	11,597	7,434
Consumer
Analysis of allowance for loan losses
Beginning balance	3	9	7	13
Impact of CECL adoption			(4)
Provision for (reversal of) credit losses	(3)	(1)	(3)	(6)
Charge-offs	0	0	0	0
Recoveries	0	0	0	1
Ending balance	$ 0	$ 8	$ 0	$ 8

Financing Receivable Excluding Accrued Interest Credit Loss Impact of CECL Adoption

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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