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Loans and Allowance for Loan Losses - Aging of Past Due Loans by Class of Loan (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Loans	$ 4,152,644	$ 4,147,691
Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	4,145,541	4,141,558
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,930	4,395
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	662	822
Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	511	916
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	7,103	6,133
Construction Real Estate Loans
Financing Receivable, Past Due [Line Items]
Loans	591,894	559,681
Construction Real Estate Loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	591,140	559,617
Construction Real Estate Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	455	43
Construction Real Estate Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	299	21
Construction Real Estate Loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction Real Estate Loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	754	64
1-4 Family Residential Real Estate Loans
Financing Receivable, Past Due [Line Items]
Loans	672,595	663,519
1-4 Family Residential Real Estate Loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	669,626	659,408
1-4 Family Residential Real Estate Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,562	3,529
1-4 Family Residential Real Estate Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	48	368
1-4 Family Residential Real Estate Loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	359	214
1-4 Family Residential Real Estate Loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,969	4,111
Commercial Real Estate Loans
Financing Receivable, Past Due [Line Items]
Loans	1,990,861	1,987,707
Commercial Real Estate Loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	1,990,059	1,987,034
Commercial Real Estate Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	763	105
Commercial Real Estate Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	153
Commercial Real Estate Loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	39	415
Commercial Real Estate Loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	802	673
Commercial loans
Financing Receivable, Past Due [Line Items]
Loans	388,182	412,064
Commercial loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	385,844	411,025
Commercial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,929	515
Commercial loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	315	277
Commercial loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	94	247
Commercial loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,338	1,039
Municipal loans
Financing Receivable, Past Due [Line Items]
Loans	438,566	450,067
Municipal loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	438,566	450,067
Municipal loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Municipal loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Municipal loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Municipal loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Loans to individuals
Financing Receivable, Past Due [Line Items]
Loans	70,546	74,653
Loans to individuals | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	70,306	74,407
Loans to individuals | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	221	203
Loans to individuals | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	3
Loans to individuals | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	19	40
Loans to individuals | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	$ 240	$ 246

X

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 3B
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447

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- Definition

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+ References

No definition available.

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