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Loans and Allowance for Loan Losses - Aging of Past Due Loans by Class of Loan (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Past Due [Line Items]
Loans	$ 4,765,289	$ 4,661,597
Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	4,756,530	4,650,195
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,391	8,352
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,754	2,361
Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,614	689
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	8,759	11,402
Construction Real Estate Loans
Financing Receivable, Past Due [Line Items]
Loans	519,528	537,827
Construction Real Estate Loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	517,938	537,730
Construction Real Estate Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,481	92
Construction Real Estate Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	5
Construction Real Estate Loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	109	0
Construction Real Estate Loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,590	97
1-4 Family Residential Real Estate Loans
Financing Receivable, Past Due [Line Items]
Loans	730,061	740,396
1-4 Family Residential Real Estate Loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	727,948	735,589
1-4 Family Residential Real Estate Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	638	3,217
1-4 Family Residential Real Estate Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,034	1,328
1-4 Family Residential Real Estate Loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	441	262
1-4 Family Residential Real Estate Loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,113	4,807
Commercial Real Estate Loans
Financing Receivable, Past Due [Line Items]
Loans	2,688,712	2,579,735
Commercial Real Estate Loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	2,687,172	2,577,350
Commercial Real Estate Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	214	2,054
Commercial Real Estate Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,192	331
Commercial Real Estate Loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	134	0
Commercial Real Estate Loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,540	2,385
Commercial loans
Financing Receivable, Past Due [Line Items]
Loans	429,952	363,167
Commercial loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	426,537	359,230
Commercial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	994	2,881
Commercial loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,508	649
Commercial loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	913	407
Commercial loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,415	3,937
Municipal loans
Financing Receivable, Past Due [Line Items]
Loans	353,324	390,968
Municipal loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	353,324	390,968
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	43,712	49,504
Loans to individuals | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	43,611	49,328
Loans to individuals | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	64	108
Loans to individuals | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	20	48
Loans to individuals | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	17	20
Loans to individuals | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	$ 101	$ 176

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