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
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost $ 11,950,810 $ 11,749,209
Collateral Dependent Loans, Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 162,434 124,130
Collateral Dependent Loans, Business Assets    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 35,708 93,416
Unguaranteed Portion, Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 68,481 48,452
Unguaranteed Portion, Business Assets    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 21,451 4,808
Unguaranteed Portion    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 390 1,690
Commercial & Industrial | Collateral Dependent Loans, Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 22,421 17,477
Commercial & Industrial | Collateral Dependent Loans, Real Estate | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 22,421 17,477
Commercial & Industrial | Collateral Dependent Loans, Real Estate | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 0
Commercial & Industrial | Collateral Dependent Loans, Business Assets    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 30,610 91,426
Commercial & Industrial | Collateral Dependent Loans, Business Assets | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 7,991 4,107
Commercial & Industrial | Collateral Dependent Loans, Business Assets | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 22,619 87,319
Commercial & Industrial | Unguaranteed Portion, Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 6,252 4,937
Commercial & Industrial | Unguaranteed Portion, Real Estate | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 6,252 4,937
Commercial & Industrial | Unguaranteed Portion, Real Estate | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 0
Commercial & Industrial | Unguaranteed Portion, Business Assets    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 21,137 4,118
Commercial & Industrial | Unguaranteed Portion, Business Assets | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 3,476 374
Commercial & Industrial | Unguaranteed Portion, Business Assets | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 17,661 3,744
Commercial & Industrial | Unguaranteed Portion    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 50 1,424
Commercial & Industrial | Unguaranteed Portion | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 50 824
Commercial & Industrial | Unguaranteed Portion | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 0 600
Construction & Development | Collateral Dependent Loans, Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 96 277
Construction & Development | Collateral Dependent Loans, Real Estate | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 96 277
Construction & Development | Collateral Dependent Loans, Business Assets    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 0
Construction & Development | Collateral Dependent Loans, Business Assets | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 0
Construction & Development | Unguaranteed Portion, Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 96 277
Construction & Development | Unguaranteed Portion, Real Estate | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 96 277
Construction & Development | Unguaranteed Portion, Business Assets    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 0
Construction & Development | Unguaranteed Portion, Business Assets | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 0
Construction & Development | Unguaranteed Portion    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 11 0
Construction & Development | Unguaranteed Portion | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 11 0
Commercial Real Estate | Collateral Dependent Loans, Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 139,917 106,376
Commercial Real Estate | Collateral Dependent Loans, Real Estate | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 112,163 85,987
Commercial Real Estate | Collateral Dependent Loans, Real Estate | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 27,754 20,389
Commercial Real Estate | Collateral Dependent Loans, Business Assets    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 5,098 1,990
Commercial Real Estate | Collateral Dependent Loans, Business Assets | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 1,990
Commercial Real Estate | Collateral Dependent Loans, Business Assets | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 5,098 0
Commercial Real Estate | Unguaranteed Portion, Real Estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 62,133 43,238
Commercial Real Estate | Unguaranteed Portion, Real Estate | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 38,070 27,813
Commercial Real Estate | Unguaranteed Portion, Real Estate | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 24,063 15,425
Commercial Real Estate | Unguaranteed Portion, Business Assets    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 314 690
Commercial Real Estate | Unguaranteed Portion, Business Assets | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 0 690
Commercial Real Estate | Unguaranteed Portion, Business Assets | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total carried at amortized cost 314 0
Commercial Real Estate | Unguaranteed Portion    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 329 266
Commercial Real Estate | Unguaranteed Portion | Small Business Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses 322 266
Commercial Real Estate | Unguaranteed Portion | Commercial Banking    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Allowance for Credit Losses $ 7 $ 0