Allowance for Loan Credit Losses - Allowance for loan losses activity (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	$ 18,715	$ 19,543
Recoveries		1
Provision for (recovery of) credit losses	111	(873)
Ending balance	18,826	18,671
Real Estate Loans \| Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	11,732	12,841
Provision for (recovery of) credit losses	(113)	(119)
Ending balance	11,619	12,722
Real Estate Loans \| Construction and land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	1,761	1,787
Provision for (recovery of) credit losses	277	(502)
Ending balance	2,038	1,285
Real Estate Loans \| Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	4,594	4,323
Provision for (recovery of) credit losses	(24)	(140)
Ending balance	4,570	4,183
Commercial - Non-Real Estate \| Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	548	495
Recoveries		1
Provision for (recovery of) credit losses	47	(19)
Ending balance	595	477
Consumer - Non-Real Estate \| Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	80	97
Provision for (recovery of) credit losses	(76)	(93)
Ending balance	$ 4	$ 4

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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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/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph c
-Publisher SEC

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(11))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

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