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Loans and Allowance for Credit Losses - Schedule of Allowance for Credit Losses and Recorded Investment in Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Beginning balance	$ 19,969	$ 17,861	$ 17,861
Charge-offs	(60)	(117)	(506)
Recoveries	40	26
Allowance for Credit Losses, Ending balance	20,172	19,485	19,969
Financing Receivable Excluding Unfunded Commitments
Allowance for Loan Losses [Roll Forward]
Provisions (credits)	223	97
Impact of CECL adoption
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Ending balance		1,618
Commercial Real Estate
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Beginning balance	12,010	10,016	10,016
Charge-offs	0	0
Recoveries	0	0
Allowance for Credit Losses, Ending balance	12,240	11,032	12,010
Commercial Real Estate | Financing Receivable Excluding Unfunded Commitments
Allowance for Loan Losses [Roll Forward]
Provisions (credits)	230	(90)
Commercial Real Estate | Impact of CECL adoption
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Ending balance		1,106
Residential Mortgage
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Beginning balance	3,303	3,029	3,029
Charge-offs	0	0
Recoveries	0	0
Allowance for Credit Losses, Ending balance	3,227	3,366	3,303
Residential Mortgage | Financing Receivable Excluding Unfunded Commitments
Allowance for Loan Losses [Roll Forward]
Provisions (credits)	(76)	40
Residential Mortgage | Impact of CECL adoption
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Ending balance		297
Commercial and Industrial
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Beginning balance	2,048	2,848	2,848
Charge-offs	0	(29)
Recoveries	15	1
Allowance for Credit Losses, Ending balance	1,960	2,105	2,048
Commercial and Industrial | Financing Receivable Excluding Unfunded Commitments
Allowance for Loan Losses [Roll Forward]
Provisions (credits)	(103)	47
Commercial and Industrial | Impact of CECL adoption
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Ending balance		(762)
Home Equity Lines of Credit
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Beginning balance	397	347	347
Charge-offs	0	0
Recoveries	0	0
Allowance for Credit Losses, Ending balance	314	379	397
Home Equity Lines of Credit | Financing Receivable Excluding Unfunded Commitments
Allowance for Loan Losses [Roll Forward]
Provisions (credits)	(83)	15
Home Equity Lines of Credit | Impact of CECL adoption
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Ending balance		17
Real Estate Construction
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Beginning balance	2,070	1,000	1,000
Charge-offs	0	0
Recoveries	0	0
Allowance for Credit Losses, Ending balance	2,313	2,465	2,070
Real Estate Construction | Financing Receivable Excluding Unfunded Commitments
Allowance for Loan Losses [Roll Forward]
Provisions (credits)	243	118
Real Estate Construction | Impact of CECL adoption
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Ending balance		1,347
Consumer
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Beginning balance	141	376	376
Charge-offs	(60)	(88)
Recoveries	25	25
Allowance for Credit Losses, Ending balance	118	138	141
Consumer | Financing Receivable Excluding Unfunded Commitments
Allowance for Loan Losses [Roll Forward]
Provisions (credits)	12	(33)
Consumer | Impact of CECL adoption
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Ending balance		(142)
Unallocated
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Beginning balance	0	245	245
Charge-offs	0	0
Recoveries	0	0
Allowance for Credit Losses, Ending balance	0	0	$ 0
Unallocated | Financing Receivable Excluding Unfunded Commitments
Allowance for Loan Losses [Roll Forward]
Provisions (credits)	$ 0	0
Unallocated | Impact of CECL adoption
Allowance for Loan Losses [Roll Forward]
Allowance for Credit Losses, Ending balance		$ (245)

X

- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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