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Loans and Allowance for Loan Losses - Loans by Portfolio Segment (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023
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Loans and Leases Receivable Disclosure [Abstract] |  |  |  |
Loans | $ 4,567,239 | $ 4,661,597 |  |
Less: Allowance for loan losses | 44,623 | 44,884 | $ 43,557 | $ 42,674
Total loans | 4,522,616 | 4,616,713 |  |
Construction Real Estate Loans |  |  |  |
Loans and Leases Receivable Disclosure [Abstract] |  |  |  |
Loans | 458,101 | 537,827 |  |
Less: Allowance for loan losses | 3,887 | 3,958 | 4,920 | 5,287
1-4 Family Residential Real Estate Loans |  |  |  |
Loans and Leases Receivable Disclosure [Abstract] |  |  |  |
Loans | 741,432 | 740,396 |  |
Less: Allowance for loan losses | 2,709 | 2,780 | 2,768 | 2,840
Commercial Real Estate Loans |  |  |  |
Loans and Leases Receivable Disclosure [Abstract] |  |  |  |
Loans | 2,577,229 | 2,579,735 |  |
Less: Allowance for loan losses | 34,730 | 35,526 | 32,893 | 32,266
Commercial loans |  |  |  |
Loans and Leases Receivable Disclosure [Abstract] |  |  |  |
Loans | 371,643 | 363,167 |  |
Less: Allowance for loan losses | 3,128 | 2,448 | 2,774 | 2,086
Municipal loans |  |  |  |
Loans and Leases Receivable Disclosure [Abstract] |  |  |  |
Loans | 371,271 | 390,968 |  |
Less: Allowance for loan losses | 14 | 16 | 19 | 19
Loans to individuals |  |  |  |
Loans and Leases Receivable Disclosure [Abstract] |  |  |  |
Loans | 47,563 | 49,504 |  |
Less: Allowance for loan losses | $ 155 | $ 156 | $ 183 | $ 176

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References 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 + Details
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