Allowance for Loan Losses and Reserve for Unfunded Loan Commitments - Allowance for Credit Losses on Basis of Impairment Method (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	$ 1,779
Collectively evaluated for impairment	23,417
Total	25,196	$ 22,302	$ 23,105	$ 16,395
Individually evaluated for impairment	10,584
Collectively evaluated for impairment	2,095,975
Total loans	2,106,559	1,649,448
SBA held for investment
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	115	4
Collectively evaluated for impairment	760	1,070
Total	875	1,074
Individually evaluated for impairment	690	510
Collectively evaluated for impairment	71,614	82,015
Total loans	72,304	82,525
Commercial loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	516	2,615
Collectively evaluated for impairment	14,738	12,438
Total	15,254	15,053	14,992	9,722
Individually evaluated for impairment	3,101	4,220
Collectively evaluated for impairment	1,184,442	927,506
Total loans	1,187,543	931,726
Residential mortgage loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	36	80
Collectively evaluated for impairment	5,414	4,034
Total	5,450	4,114	5,318	4,254
Individually evaluated for impairment	3,361	3,262
Collectively evaluated for impairment	601,730	406,093
Total loans	605,091	409,355
Consumer loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	0	56
Collectively evaluated for impairment	990	615
Total	990	671	681	625
Individually evaluated for impairment	0	637
Collectively evaluated for impairment	78,164	77,307
Total loans	78,164	77,944
Residential construction loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	1,112	68
Collectively evaluated for impairment	1,515	1,322
Total	2,627	1,390	$ 813	$ 715
Individually evaluated for impairment	3,432	3,122
Collectively evaluated for impairment	160,025	117,403
Total loans	163,457	120,525
Total
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment		2,823
Collectively evaluated for impairment		19,479
Total		22,302
Individually evaluated for impairment		11,751
Collectively evaluated for impairment		1,610,324
Total loans	$ 2,078,631	$ 1,622,075

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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