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, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted average term		24 months	30 months	48 months	30 months
New York and Other States [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted average term	[1]	24 months	36 months	48 months	36 months
Florida [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted average term			6 months		18 months
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted average term		24 months	12 months	24 months	12 months
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | New York and Other States [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted average term	[1]	24 months	12 months	24 months	12 months
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Florida [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted average term					12 months
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted average term			18 months	24 months	18 months
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | New York and Other States [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted average term	[1]		24 months	24 months	24 months
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Florida [Member]
Financial Effect of Modifications Made to Borrowers Experiencing Financial Difficulty [Abstract]
Weighted average term			6 months		6 months

[1] Includes New York, New Jersey, Vermont and Massachusetts.