v3.26.1
Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss $ 6,733,960   $ 6,563,685
Real Estate Acquired Through Foreclosure 8,497   4,582
SBB Loans 16,017   16,022
Canopy Loans 36,554   36,554
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss 3,422    
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss 1,812    
Receivables [Abstract]      
Total mortgage loans 6,733,960   6,563,685
Mortgage Loans in Process of Foreclosure, Amount $ 4,124   $ 2,161
Serious delinquency rate 0.60%   0.50%
Past due 90 days or more and still accruing interest $ 0   $ 0
Non-accrual loans 52,141   43,692
Financial Asset, 30 to 59 Days Past Due [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 86,533   79,081
Financial Asset, 60 to 89 Days Past Due [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 22,865   23,606
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 37,207   32,900
US Government Agency Insured Loans [Member]      
Receivables [Abstract]      
Total mortgage loans 3,290   3,559
Mortgage Loans in Process of Foreclosure, Amount $ 0   $ 0
Serious delinquency rate 0.00%   0.00%
Past due 90 days or more and still accruing interest $ 0   $ 0
Non-accrual loans 0   0
US Government Agency Insured Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 122   189
US Government Agency Insured Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 53   21
US Government Agency Insured Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 28   0
Nonperforming Financial Instruments [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 146,605   135,587
Interest payments applied to principal on Non-Accrual Loans 7,604   7,119
Nonperforming Financial Instruments [Member] | US Government Agency Insured Loans [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 203   210
Performing Financial Instruments [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 6,587,355   6,428,098
Performing Financial Instruments [Member] | US Government Agency Insured Loans [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 3,087   3,349
Conventional Mortgage Loan [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,273,614   1,361,723
Financing Receivable, Originated, Current Fiscal Year and Four Preceding Fiscal Years 4,457,056   5,198,403
Receivables [Abstract]      
Total mortgage loans 6,730,670   6,560,126
Mortgage Loans in Process of Foreclosure, Amount $ 4,124   $ 2,161
Serious delinquency rate 0.60%   0.50%
Past due 90 days or more and still accruing interest $ 0   $ 0
Non-accrual loans 52,141   43,692
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Balance, beginning of period 8,554 $ 7,187  
Provision (reversal) for credit losses 119 403  
Balance, end of period 8,673 7,590  
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 8,673 7,590 8,554
Conventional Mortgage Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 39,912   21,469
Financing Receivable, Originated, Current Fiscal Year and Four Preceding Fiscal Years 46,499   57,423
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 86,411   78,892
Conventional Mortgage Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 10,057   6,327
Financing Receivable, Originated, Current Fiscal Year and Four Preceding Fiscal Years 12,755   17,258
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 22,812   23,585
Conventional Mortgage Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 12,091   9,176
Financing Receivable, Originated, Current Fiscal Year and Four Preceding Fiscal Years 25,088   23,724
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 37,179   32,900
Conventional Mortgage Loan [Member] | Nonperforming Financial Instruments [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 62,060   36,972
Financing Receivable, Originated, Current Fiscal Year and Four Preceding Fiscal Years 84,342   98,405
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 146,402   135,377
Conventional Mortgage Loan [Member] | Performing Financial Instruments [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 2,211,554   1,324,751
Financing Receivable, Originated, Current Fiscal Year and Four Preceding Fiscal Years 4,372,714   5,099,998
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss 6,584,268   6,424,749
Small Business Boost      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Balance, beginning of period 2,094 1,795  
Chargeoffs 7 57  
Provision (reversal) for credit losses 6 64  
Balance, end of period 2,093 1,802  
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest 2,093 1,802 2,094
Canopy Loan      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Balance, beginning of period 5,849 2,312  
Provision (reversal) for credit losses 0 1,697  
Balance, end of period 5,849 4,009  
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest $ 5,849 $ 4,009 $ 5,849