v3.26.1
Loan Portfolio and Allowance for Credit Losses - Performance of Loans Modified to Borrowers Experiencing Financial Difficulty (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Jun. 30, 2025
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans $ 1,817 $ 896
Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 1,582 690
30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 126
60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 235 80
Installment [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Installment [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Installment [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Installment [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Installment [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
New York and Other States [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 803 739
New York and Other States [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 568 533
New York and Other States [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 126
New York and Other States [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
New York and Other States [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 235 80
New York and Other States [Member] | Installment [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
New York and Other States [Member] | Installment [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
New York and Other States [Member] | Installment [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
New York and Other States [Member] | Installment [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
New York and Other States [Member] | Installment [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Florida [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 1,014 157
Florida [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 1,014 157
Florida [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Florida [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Florida [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Florida [Member] | Installment [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Florida [Member] | Installment [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Florida [Member] | Installment [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Florida [Member] | Installment [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Florida [Member] | Installment [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Commercial Real Estate [Member] | Commercial Portfolio Segment [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Commercial Real Estate [Member] | Commercial Portfolio Segment [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Commercial Real Estate [Member] | Commercial Portfolio Segment [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Commercial Real Estate [Member] | Commercial Portfolio Segment [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Commercial Real Estate [Member] | Commercial Portfolio Segment [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Commercial Real Estate [Member] | New York and Other States [Member] | Commercial Portfolio Segment [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Commercial Real Estate [Member] | New York and Other States [Member] | Commercial Portfolio Segment [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Commercial Real Estate [Member] | New York and Other States [Member] | Commercial Portfolio Segment [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Commercial Real Estate [Member] | New York and Other States [Member] | Commercial Portfolio Segment [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Commercial Real Estate [Member] | New York and Other States [Member] | Commercial Portfolio Segment [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Commercial Real Estate [Member] | Florida [Member] | Commercial Portfolio Segment [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Commercial Real Estate [Member] | Florida [Member] | Commercial Portfolio Segment [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Commercial Real Estate [Member] | Florida [Member] | Commercial Portfolio Segment [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Commercial Real Estate [Member] | Florida [Member] | Commercial Portfolio Segment [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Commercial Real Estate [Member] | Florida [Member] | Commercial Portfolio Segment [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Other [Member] | Commercial Portfolio Segment [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Other [Member] | Commercial Portfolio Segment [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Other [Member] | Commercial Portfolio Segment [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Other [Member] | Commercial Portfolio Segment [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Other [Member] | Commercial Portfolio Segment [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Other [Member] | New York and Other States [Member] | Commercial Portfolio Segment [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Other [Member] | New York and Other States [Member] | Commercial Portfolio Segment [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Other [Member] | New York and Other States [Member] | Commercial Portfolio Segment [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Other [Member] | New York and Other States [Member] | Commercial Portfolio Segment [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Other [Member] | New York and Other States [Member] | Commercial Portfolio Segment [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Other [Member] | Florida [Member] | Commercial Portfolio Segment [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Other [Member] | Florida [Member] | Commercial Portfolio Segment [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Other [Member] | Florida [Member] | Commercial Portfolio Segment [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Other [Member] | Florida [Member] | Commercial Portfolio Segment [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
First Mortgages [Member] | Real Estate Mortgage - 1 to 4 Family [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 1,817 473
First Mortgages [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 1,582 393
First Mortgages [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
First Mortgages [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
First Mortgages [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 235 80
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]    
Performance of modified loans [1] 803 473
First Mortgages [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 568 393
First Mortgages [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
First Mortgages [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
First Mortgages [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 235 80
First Mortgages [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 1,014 0
First Mortgages [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 1,014 0
First Mortgages [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
First Mortgages [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
First Mortgages [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Home Equity Loans [Member] | Real Estate Mortgage - 1 to 4 Family [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 105
Home Equity Loans [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 105
Home Equity Loans [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Home Equity Loans [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Home Equity Loans [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Home Equity Loans [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 18
Home Equity Loans [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 18
Home Equity Loans [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Home Equity Loans [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Home Equity Loans [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 87
Home Equity Loans [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 87
Home Equity Loans [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Home Equity Loans [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Home Equity Loans [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Home Equity Lines of Credit [Member] | Real Estate Mortgage - 1 to 4 Family [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 318
Home Equity Lines of Credit [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 192
Home Equity Lines of Credit [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 126
Home Equity Lines of Credit [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Home Equity Lines of Credit [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
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]    
Performance of modified loans [1] 0 248
Home Equity Lines of Credit [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 122
Home Equity Lines of Credit [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 126
Home Equity Lines of Credit [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Home Equity Lines of Credit [Member] | New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans [1] 0 0
Home Equity Lines of Credit [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 70
Home Equity Lines of Credit [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | Current [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 70
Home Equity Lines of Credit [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 30 - 59 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Home Equity Lines of Credit [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 60 - 89 Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans 0 0
Home Equity Lines of Credit [Member] | Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member] | 90+ Days Past Due [Member]    
Loan Portfolio and Allowance for Credit Losses [Abstract]    
Performance of modified loans $ 0 $ 0
[1] Includes New York, New Jersey, Vermont and Massachusetts.