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Loans and Allowance for Credit Losses - Loans by Class of Loan Portfolio (Details) $ in Thousands | Sep. 30, 2025 USD ($) | Jun. 30, 2025 USD ($) | Dec. 31, 2024 USD ($) | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | --- | --- | --- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans held for investment | $ 4,882,969 |  | $ 4,771,988 |  |  |
% of Total Loans | 1.0000 |  | 1.0000 |  |  |
Less: allowance for credit losses | $ (59,554) | $ (58,483) | $ (57,910) | $ (58,669) | $ (58,478) | $ (57,351)
Loans, net | 4,823,415 |  | 4,714,078 |  |  |
Commercial real estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans held for investment | $ 2,642,601 |  | $ 2,557,806 |  |  |
% of Total Loans | 0.5412 |  | 0.5360 |  |  |
Less: allowance for credit losses | $ (21,069) | (21,662) | $ (22,846) | (23,099) | (22,984) | (23,015)
Residential real estate |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans held for investment | $ 1,383,348 |  | $ 1,329,406 |  |  |
% of Total Loans | 0.2833 |  | 0.2785 |  |  |
Less: allowance for credit losses | $ (22,810) | (21,720) | $ (21,776) | (21,707) | (20,500) | (19,909)
Construction |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans held for investment | $ 352,116 |  | $ 335,999 |  |  |
% of Total Loans | 0.0721 |  | 0.0704 |  |  |
Less: allowance for credit losses | $ (6,221) | (5,805) | $ (2,854) | (2,894) | (3,471) | (3,935)
Commercial |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans held for investment | $ 221,598 |  | $ 237,932 |  |  |
% of Total Loans | 0.0454 |  | 0.0499 |  |  |
Less: allowance for credit losses | $ (3,642) | (2,870) | $ (3,138) | (3,225) | (2,866) | (2,671)
Consumer |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans held for investment | $ 278,242 |  | $ 303,746 |  |  |
% of Total Loans | 0.0570 |  | 0.0637 |  |  |
Less: allowance for credit losses | $ (5,702) | (6,188) | $ (6,889) | (7,254) | (8,145) | (7,601)
Credit cards |  |  |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |  |  |
Loans held for investment | $ 5,064 |  | $ 7,099 |  |  |
% of Total Loans | 0.0010 |  | 0.0015 |  |  |
Less: allowance for credit losses | $ (110) | $ (238) | $ (407) | $ (490) | $ (512) | $ (220)

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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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