v3.25.1
Loans and Leases Held for Investment and Credit Quality - Schedule of Guaranteed and Unguaranteed Loan and Lease Balance by Asset Quality Indicator (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost $ 10,411,445 $ 9,934,609
Guaranteed Balance    
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost 3,198,325 3,162,994
Unguaranteed Balance    
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost $ 7,213,120 $ 6,771,615
% Guaranteed    
Financing Receivable Recorded Investment [Line Items]    
% Guaranteed 30.70% 31.80%
Pass    
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost $ 9,273,338 $ 8,892,619
Pass | Guaranteed Balance    
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost 2,627,607 2,644,310
Pass | Unguaranteed Balance    
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost $ 6,645,731 $ 6,248,309
Pass | % Guaranteed    
Financing Receivable Recorded Investment [Line Items]    
% Guaranteed 28.30% 29.70%
Special Mention    
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost $ 566,616 $ 529,918
Special Mention | Guaranteed Balance    
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost 176,876 172,015
Special Mention | Unguaranteed Balance    
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost $ 389,740 $ 357,903
Special Mention | % Guaranteed    
Financing Receivable Recorded Investment [Line Items]    
% Guaranteed 31.20% 32.50%
Substandard    
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost $ 571,491 $ 512,072
Substandard | Guaranteed Balance    
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost 393,842 346,669
Substandard | Unguaranteed Balance    
Financing Receivable Recorded Investment [Line Items]    
Total carried at amortized cost $ 177,649 $ 165,403
Substandard | % Guaranteed    
Financing Receivable Recorded Investment [Line Items]    
% Guaranteed 68.90% 67.70%