v3.26.1
Loan Portfolio and Allowance for Credit Losses - Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty (Details) - Payment Delay [Member]
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Loan Portfolio and Allowance for Credit Losses [Abstract]        
Weighted average term 24 months 24 months 20 months 48 months
New York and Other States [Member]        
Loan Portfolio and Allowance for Credit Losses [Abstract]        
Weighted average term 24 months 24 months [1] 24 months [1] 48 months [1]
Florida [Member]        
Loan Portfolio and Allowance for Credit Losses [Abstract]        
Weighted average term     7 months  
First Mortgages [Member] | Real Estate Mortgage - 1 to 4 Family [Member]        
Loan Portfolio and Allowance for Credit Losses [Abstract]        
Weighted average term 24 months 24 months 20 months 24 months
First Mortgages [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member]        
Loan Portfolio and Allowance for Credit Losses [Abstract]        
Weighted average term 24 months 24 months [1] 24 months [1] 24 months [1]
First Mortgages [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member]        
Loan Portfolio and Allowance for Credit Losses [Abstract]        
Weighted average term     7 months  
Home Equity Lines of Credit [Member] | Real Estate Mortgage - 1 to 4 Family [Member]        
Loan Portfolio and Allowance for Credit Losses [Abstract]        
Weighted average term       24 months
Home Equity Lines of Credit [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member]        
Loan Portfolio and Allowance for Credit Losses [Abstract]        
Weighted average term       24 months
[1] Includes New York, New Jersey, Vermont and Massachusetts.