v3.26.3
Loans - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans $ 6,976,861,000   $ 6,976,861,000   $ 6,613,391,000
Syndication facilities included in loans 736,400,000   736,400,000   434,900,000
Payment for purchase, loan held-for-sale   $ 0   $ 0  
Interest income on nonaccrual loans 0 0 0 0  
Loans held for sale transferred to loans held for investment 0   232,600,000    
Proceeds from sale of loans, net 63,700,000 33,800,000 218,900,000 58,300,000  
Interest receivable 28,900,000   28,900,000   24,300,000
South Florida          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Mortgage loans on real estate, commercial and consumer, net 1,400,000,000   1,400,000,000    
Tampa          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Mortgage loans on real estate, commercial and consumer, net 276,000,000   276,000,000    
Central Florida          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Mortgage loans on real estate, commercial and consumer, net 106,000,000   106,000,000    
New York          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Mortgage loans on real estate, commercial and consumer, net 176,000,000   176,000,000    
Houston and Other Regions          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Mortgage loans on real estate, commercial and consumer, net 281,000,000   281,000,000    
Real estate loans          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans 5,060,044,000   5,060,044,000   4,772,853,000
Real estate loans | Single-family residential          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans 2,159,674,000   2,159,674,000   1,515,181,000
Payment for purchase, loan held-for-sale 230,400,000   736,600,000    
Real estate loans | Owner occupied          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans 710,758,000   710,758,000   809,336,000
Commercial loans          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans 1,657,316,000   1,657,316,000   1,446,406,000
Commercial loans | Single-family residential          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Payment for purchase, loan held-for-sale 99,900,000   210,500,000    
Commercial loans | Owner occupied          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Gain (loss) on sale (100,000) 100,000 (2,900,000) 3,300,000  
Loss on sale of loans, carried at lower of cost or fair value   $ 900,000   $ 900,000  
Pledged as Collateral          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans $ 1,300,000,000   $ 1,300,000,000   $ 1,600,000,000