Allowance for Loan Credit Losses - Past due and non-accrual loans (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Financing receivable, past due
Current	$ 1,815,540	$ 1,785,448
Total loans		1,785,448	$ 1,721,931
Commercial Real Estate \| Real Estate Loans
Financing receivable, past due
Current	1,133,069	1,118,127
Total loans		1,118,127	1,091,221
Construction and land development \| Real Estate Loans
Financing receivable, past due
Current	179,570	195,027
Total loans		195,027	199,324
Residential Real Estate \| Real Estate Loans
Financing receivable, past due
Current	464,509	426,841
Total loans		426,841	385,696
Commercial \| Commercial - Non-Real Estate
Financing receivable, past due
Current	37,925	44,924
Total loans		44,924	45,105
Consumer \| Consumer - Non-Real Estate
Financing receivable, past due
Current	$ 467	529
Total loans		$ 529	$ 585

It represents the loans and leases receivable, current carrying amount.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 80
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-80

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481990/310-10-45-2

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