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Allowance for Credit Losses and Reserve for Unfunded Loan Commitments - Activity in the Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Charge-offs	$ (1,125)
Recoveries	135
Net recoveries (charge-offs)	(990)
Provision for loan losses charged to expense	777
Balance, end of period	25,988		$ 25,988
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	26,201	$ 22,168	25,196	$ 22,302
Charge-offs		(541)		(547)
Recoveries		43		94
Net recoveries (charge-offs)		(498)		(453)
Provision for (credit to) loan losses charged to expense		1,188		1,009
Balance, end of period		22,858		22,858
SBA loans held for investment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Charge-offs			(113)
Recoveries	15		15
Net recoveries (charge-offs)	15		(98)
Provision for loan losses charged to expense	438		616
Balance, end of period	1,556		1,556
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,103	941	875	1,074
Recoveries		6		28
Net recoveries (charge-offs)		6		28
Provision for (credit to) loan losses charged to expense		(189)		(344)
Balance, end of period		758		758
SBA loans held for investment \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance, end of period	163		163
Commercial loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Recoveries	96		367
Net recoveries (charge-offs)	96		367
Provision for loan losses charged to expense	121
(Credit to) loan losses charged to expense			(276)
Balance, end of period	15,516		15,516
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	15,299	14,705	15,254	15,053
Charge-offs		(501)		(501)
Recoveries		32		61
Net recoveries (charge-offs)		(469)		(440)
Provision for (credit to) loan losses charged to expense		672		295
Balance, end of period		14,908		14,908
Commercial loans \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance, end of period	171		171
Residential mortgage loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Provision for loan losses charged to expense	302		611
Balance, end of period	6,437		6,437
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	6,135	4,284	5,450	4,114
Recoveries		1		1
Net recoveries (charge-offs)		1		1
Provision for (credit to) loan losses charged to expense		501		671
Balance, end of period		4,786		4,786
Residential mortgage loans \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance, end of period	376		376
Consumer loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Charge-offs	(225)		(345)
Recoveries	24		36
Net recoveries (charge-offs)	(201)		(309)
Provision for loan losses charged to expense	24		63
Balance, end of period	845		845
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	1,022	642	990	671
Charge-offs		(40)		(46)
Recoveries		4		4
Net recoveries (charge-offs)		(36)		(42)
Provision for (credit to) loan losses charged to expense		197		174
Balance, end of period		803		803
Consumer loans \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance, end of period	101		101
Residential construction loans
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Charge-offs	(900)		(900)
Net recoveries (charge-offs)	(900)		(900)
(Credit to) loan losses charged to expense	(108)		(129)
Balance, end of period	1,634		1,634
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	2,642	1,596	2,627	1,390
Provision for (credit to) loan losses charged to expense		7		213
Balance, end of period		$ 1,603		$ 1,603
Residential construction loans \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance, end of period	$ 36		$ 36