v3.26.3
Loan Portfolio and Allowance for Credit Losses - Activity in Allowance For Credit Losses on Loans by Portfolio Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Balance at beginning of period $ 54,082 $ 51,265 $ 52,205 $ 50,248 $ 50,248
Total loan charge offs 19 22 77 281  
Total recoveries 49 198 234 724  
Net loans (recoveries) charged off (30) (176) (157) (443)  
Provision (credit) for credit losses 1,050 450 2,800 1,200  
Balance at end of period 55,162 51,891 55,162 51,891 52,205
Commercial [Member]          
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Balance at beginning of period 3,379 3,134 3,081 3,420 3,420
Total loan charge offs 0 0 19 4  
Total recoveries 0 0 40 322  
Net loans (recoveries) charged off 0 0 (21) (318)  
Provision (credit) for credit losses 92 (3) 369 (607)  
Balance at end of period 3,471 3,131 3,471 3,131 3,081
Real Estate Mortgage - 1 to 4 Family [Member]          
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Balance at beginning of period 50,555 47,877 48,895 46,636 46,636
Total loan charge offs 0 0 0 99  
Total recoveries 44 194 159 373  
Net loans (recoveries) charged off (44) (194) (159) (274)  
Provision (credit) for credit losses 952 446 2,497 1,607  
Balance at end of period 51,551 48,517 51,551 48,517 48,895
Installment [Member]          
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Balance at beginning of period 148 254 229 192 192
Total loan charge offs 19 22 58 178 217
Total recoveries 5 4 35 29  
Net loans (recoveries) charged off 14 18 23 149  
Provision (credit) for credit losses 6 7 (66) 200  
Balance at end of period 140 243 140 243 $ 229
New York and Other States [Member]          
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Total loan charge offs [1] 4 2 43 152  
Total recoveries [1] 49 198 194 409  
New York and Other States [Member] | Commercial [Member]          
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Total loan charge offs [1] 0 0 19 4  
Total recoveries [1] 0 0 0 7  
New York and Other States [Member] | Real Estate Mortgage - 1 to 4 Family [Member]          
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Total loan charge offs [1] 0 0 0 99  
Total recoveries [1] 44 194 159 373  
New York and Other States [Member] | Installment [Member]          
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Total loan charge offs [1] 4 2 24 49  
Total recoveries [1] 5 4 35 29  
Florida [Member]          
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Total loan charge offs 15 20 34 129  
Total recoveries 0 0 40 315  
Florida [Member] | Commercial [Member]          
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Total loan charge offs 0 0 0 0  
Total recoveries 0 0 40 315  
Florida [Member] | Real Estate Mortgage - 1 to 4 Family [Member]          
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Total loan charge offs 0 0 0 0  
Total recoveries 0 0 0 0  
Florida [Member] | Installment [Member]          
Loan Portfolio and Allowance for Credit Losses [Abstract]          
Total loan charge offs 15 20 34 129  
Total recoveries $ 0 $ 0 $ 0 $ 0  
[1] Includes New York, New Jersey, Vermont and Massachusetts.