v3.25.1
Loan Portfolio and Allowance for Credit Losses, Amortized Cost Basis of Loans Modified to Borrowers Experiencing Financial Difficulty (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Financing Receivable Modifications Information [Abstract]    
Loan modifications classifications from previously performing loans $ 7,100 $ 8,100
Financing Receivable Modifications [Abstract]    
% of Total Class of Financing Receivable 0.00% 0.00%
New York and Other States [Member]    
Financing Receivable Modifications [Abstract]    
% of Total Class of Financing Receivable [1] 0.00% 0.00%
Florida [Member]    
Financing Receivable Modifications [Abstract]    
% of Total Class of Financing Receivable 0.00% 0.00%
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member]    
Financing Receivable Modifications [Abstract]    
% of Total Class of Financing Receivable 0.00% 0.01%
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | New York and Other States [Member]    
Financing Receivable Modifications [Abstract]    
% of Total Class of Financing Receivable [1] 0.00% 0.00%
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Florida [Member]    
Financing Receivable Modifications [Abstract]    
% of Total Class of Financing Receivable   0.01%
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member]    
Financing Receivable Modifications [Abstract]    
% of Total Class of Financing Receivable 0.00%  
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Florida [Member]    
Financing Receivable Modifications [Abstract]    
% of Total Class of Financing Receivable 0.00%  
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member]    
Financing Receivable Modifications [Abstract]    
% of Total Class of Financing Receivable 0.03% 0.00%
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | New York and Other States [Member]    
Financing Receivable Modifications [Abstract]    
% of Total Class of Financing Receivable [1] 0.05% 0.00%
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Florida [Member]    
Financing Receivable Modifications [Abstract]    
% of Total Class of Financing Receivable 0.00%  
Payment Delay [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified $ 197 $ 85
Payment Delay [Member] | New York and Other States [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified [1] 197 0
Payment Delay [Member] | Florida [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 0 85
Payment Delay [Member] | Commercial [Member] | Commercial Real Estate [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 0 0
Payment Delay [Member] | Commercial [Member] | Commercial Real Estate [Member] | New York and Other States [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified [1] 0 0
Payment Delay [Member] | Commercial [Member] | Commercial Real Estate [Member] | Florida [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 0 0
Payment Delay [Member] | Commercial [Member] | Other [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 0 0
Payment Delay [Member] | Commercial [Member] | Other [Member] | New York and Other States [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified [1] 0 0
Payment Delay [Member] | Commercial [Member] | Other [Member] | Florida [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 0 0
Payment Delay [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 75 85
Payment Delay [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | New York and Other States [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified [1] 75 0
Payment Delay [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Florida [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 0 85
Payment Delay [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 0 0
Payment Delay [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | New York and Other States [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified [1] 0 0
Payment Delay [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Florida [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 0 0
Payment Delay [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 122 0
Payment Delay [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | New York and Other States [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified [1] 122 0
Payment Delay [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Florida [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 0 0
Payment Delay [Member] | Installment [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified 0 0
Payment Delay [Member] | Installment [Member] | New York and Other States [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified [1] 0 0
Payment Delay [Member] | Installment [Member] | Florida [Member]    
Financing Receivable Modifications [Abstract]    
Loans modified $ 0 $ 0
[1] Includes New York, New Jersey, Vermont and Massachusetts.