v3.26.3
Allowance for Credit Losses - Schedule of Amortized Cost Basis of Collateral Dependent/ Impaired Loans (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total $ 6,976,861 $ 6,613,391
Real estate loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 5,060,044 4,772,853
Real estate loans | Commercial real estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 2,189,612 2,448,336
Real estate loans | Nonowner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 1,468,739 1,591,861
Real estate loans | Multi-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 220,001 322,447
Real estate loans | Land development and construction loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 500,872 534,028
Real estate loans | Single-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 2,159,674 1,515,181
Real estate loans | Owner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 710,758 809,336
Commercial loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 1,657,316 1,446,406
Consumer loans and overdrafts    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 209,999 245,530
Collateralized Loan Obligations    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 109,943 174,608
Collateralized Loan Obligations | Real estate loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 89,963 119,138
Collateralized Loan Obligations | Real estate loans | Commercial real estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 19,975 56,385
Collateralized Loan Obligations | Real estate loans | Nonowner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 19,975 33,950
Collateralized Loan Obligations | Real estate loans | Multi-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 22,435
Collateralized Loan Obligations | Real estate loans | Land development and construction loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Real estate loans | Single-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 15,040 15,388
Collateralized Loan Obligations | Real estate loans | Owner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 54,948 47,365
Collateralized Loan Obligations | Commercial loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 12,562 46,794
Collateralized Loan Obligations | Loans to financial institutions and acceptances    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0  
Collateralized Loan Obligations | Consumer loans and overdrafts    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 7,418 8,676
Collateralized Loan Obligations | Commercial Real Estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 75,339 113,718
Collateralized Loan Obligations | Commercial Real Estate | Real estate loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 74,923 103,750
Collateralized Loan Obligations | Commercial Real Estate | Real estate loans | Commercial real estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 19,975 56,385
Collateralized Loan Obligations | Commercial Real Estate | Real estate loans | Nonowner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total $ 19,975 $ 33,950
Weighted-average loan-to-value 79.90% 76.90%
Collateralized Loan Obligations | Commercial Real Estate | Real estate loans | Multi-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total $ 0 $ 22,435
Weighted-average loan-to-value   33.20%
Collateralized Loan Obligations | Commercial Real Estate | Real estate loans | Land development and construction loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 $ 0
Collateralized Loan Obligations | Commercial Real Estate | Real estate loans | Single-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total $ 0 $ 0
Weighted-average loan-to-value 59.50% 73.70%
Collateralized Loan Obligations | Commercial Real Estate | Real estate loans | Owner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total $ 54,948 $ 47,365
Weighted-average loan-to-value 67.60% 72.70%
Collateralized Loan Obligations | Commercial Real Estate | Commercial loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total $ 416 $ 9,968
Weighted-average loan-to-value 26.50% 77.10%
Collateralized Loan Obligations | Commercial Real Estate | Loans to financial institutions and acceptances    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total $ 0  
Collateralized Loan Obligations | Commercial Real Estate | Consumer loans and overdrafts    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 $ 0
Collateralized Loan Obligations | Residential Real Estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 15,040 15,388
Collateralized Loan Obligations | Residential Real Estate | Real estate loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 15,040 15,388
Collateralized Loan Obligations | Residential Real Estate | Real estate loans | Commercial real estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Residential Real Estate | Real estate loans | Nonowner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Residential Real Estate | Real estate loans | Multi-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Residential Real Estate | Real estate loans | Land development and construction loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Residential Real Estate | Real estate loans | Single-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 15,040 15,388
Collateralized Loan Obligations | Residential Real Estate | Real estate loans | Owner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Residential Real Estate | Commercial loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Residential Real Estate | Loans to financial institutions and acceptances    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0  
Collateralized Loan Obligations | Residential Real Estate | Consumer loans and overdrafts    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Other    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 19,564 45,502
Collateralized Loan Obligations | Other | Real estate loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Other | Real estate loans | Commercial real estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Other | Real estate loans | Nonowner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Other | Real estate loans | Multi-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Other | Real estate loans | Land development and construction loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Other | Real estate loans | Single-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Other | Real estate loans | Owner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Other | Commercial loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 12,146 36,826
Collateralized Loan Obligations | Other | Loans to financial institutions and acceptances    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0  
Collateralized Loan Obligations | Other | Consumer loans and overdrafts    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 7,418 8,676
Collateralized Loan Obligations | Specific Reserves    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 3,389 263
Collateralized Loan Obligations | Specific Reserves | Real estate loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 1,578 0
Collateralized Loan Obligations | Specific Reserves | Real estate loans | Commercial real estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 1,079 0
Collateralized Loan Obligations | Specific Reserves | Real estate loans | Nonowner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 1,079 0
Collateralized Loan Obligations | Specific Reserves | Real estate loans | Multi-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Specific Reserves | Real estate loans | Land development and construction loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Specific Reserves | Real estate loans | Single-family residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0 0
Collateralized Loan Obligations | Specific Reserves | Real estate loans | Owner occupied    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 499 0
Collateralized Loan Obligations | Specific Reserves | Commercial loans    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 1,811 263
Collateralized Loan Obligations | Specific Reserves | Loans to financial institutions and acceptances    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total 0  
Collateralized Loan Obligations | Specific Reserves | Consumer loans and overdrafts    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Total $ 0 $ 0