v3.26.1
Allowance For Credit Losses (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Feb. 01, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]          
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest $ 108,590   $ 92,973 $ 88,130 $ 87,966
Allowance for credit loss, qualitative adjustment 6,500   3,200    
Loan balance 9,667,260   8,051,242    
First Citizens Acquisition          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Loan balance   $ 1,591,776      
Financing Receivable, Allowance for Credit Loss   $ 15,573      
special purpose mortgage loan program          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Loan balance 238,000        
special purpose mortgage loan program          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Allowance for credit loss, qualitative adjustment 2,400   2,300    
Former First Citizens Loans          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Allowance for credit loss, qualitative adjustment 3,200        
Catastrophe          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Allowance for credit loss, qualitative adjustment $ 583   $ 561