v3.26.1
Loans and Leases Held for Investment and Credit Quality - Schedule of Amortized Cost Basis of Collateral-Dependent Loans and Leases (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost $ 12,436,582 $ 11,749,209
Collateral Dependent Loans, Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 193,254 124,130
Collateral Dependent Loans, Real Estate | Commercial & Industrial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 29,970 17,477
Collateral Dependent Loans, Real Estate | Commercial & Industrial | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 29,970 17,477
Collateral Dependent Loans, Real Estate | Commercial & Industrial | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 0
Collateral Dependent Loans, Real Estate | Construction & Development    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost   277
Collateral Dependent Loans, Real Estate | Construction & Development | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost   277
Collateral Dependent Loans, Real Estate | Commercial Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 156,478 106,376
Collateral Dependent Loans, Real Estate | Commercial Real Estate | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 132,952 85,987
Collateral Dependent Loans, Real Estate | Commercial Real Estate | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 23,526 20,389
Collateral Dependent Loans, Real Estate | Commercial Land    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 6,806  
Collateral Dependent Loans, Real Estate | Commercial Land | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 6,806  
Collateral Dependent Loans, Business Assets    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 30,982 93,416
Collateral Dependent Loans, Business Assets | Commercial & Industrial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 25,996 91,426
Collateral Dependent Loans, Business Assets | Commercial & Industrial | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 12,854 4,107
Collateral Dependent Loans, Business Assets | Commercial & Industrial | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 13,142 87,319
Collateral Dependent Loans, Business Assets | Construction & Development    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost   0
Collateral Dependent Loans, Business Assets | Construction & Development | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost   0
Collateral Dependent Loans, Business Assets | Commercial Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 4,986 1,990
Collateral Dependent Loans, Business Assets | Commercial Real Estate | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 1,990
Collateral Dependent Loans, Business Assets | Commercial Real Estate | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 4,986 0
Collateral Dependent Loans, Business Assets | Commercial Land    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0  
Collateral Dependent Loans, Business Assets | Commercial Land | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0  
Unguaranteed Portion, Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 77,460 48,452
Unguaranteed Portion, Real Estate | Commercial & Industrial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 4,828 4,937
Unguaranteed Portion, Real Estate | Commercial & Industrial | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 4,828 4,937
Unguaranteed Portion, Real Estate | Commercial & Industrial | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 0
Unguaranteed Portion, Real Estate | Construction & Development    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost   277
Unguaranteed Portion, Real Estate | Construction & Development | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost   277
Unguaranteed Portion, Real Estate | Commercial Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 67,539 43,238
Unguaranteed Portion, Real Estate | Commercial Real Estate | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 44,013 27,813
Unguaranteed Portion, Real Estate | Commercial Real Estate | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 23,526 15,425
Unguaranteed Portion, Real Estate | Commercial Land    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 5,093  
Unguaranteed Portion, Real Estate | Commercial Land | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 5,093  
Unguaranteed Portion, Business Assets    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 19,169 4,808
Unguaranteed Portion, Business Assets | Commercial & Industrial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 18,866 4,118
Unguaranteed Portion, Business Assets | Commercial & Industrial | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 8,518 374
Unguaranteed Portion, Business Assets | Commercial & Industrial | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 10,348 3,744
Unguaranteed Portion, Business Assets | Construction & Development    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost   0
Unguaranteed Portion, Business Assets | Construction & Development | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost   0
Unguaranteed Portion, Business Assets | Commercial Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 303 690
Unguaranteed Portion, Business Assets | Commercial Real Estate | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 690
Unguaranteed Portion, Business Assets | Commercial Real Estate | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 303 0
Unguaranteed Portion, Business Assets | Commercial Land    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0  
Unguaranteed Portion, Business Assets | Commercial Land | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0  
Unguaranteed Portion    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 461 1,690
Unguaranteed Portion | Commercial & Industrial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 48 1,424
Unguaranteed Portion | Commercial & Industrial | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 48 824
Unguaranteed Portion | Commercial & Industrial | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 0 600
Unguaranteed Portion | Construction & Development    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses   0
Unguaranteed Portion | Construction & Development | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses   0
Unguaranteed Portion | Commercial Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 413 266
Unguaranteed Portion | Commercial Real Estate | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 413 266
Unguaranteed Portion | Commercial Real Estate | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 0 $ 0
Unguaranteed Portion | Commercial Land    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 0  
Unguaranteed Portion | Commercial Land | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses $ 0