v3.25.1
Loan Portfolio and Allowance for Credit Losses, Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Allowance for loan losses by portfolio segment [Roll Forward]      
Balance at beginning of period $ 50,248 $ 48,578 $ 48,578
Loans charged off [Abstract]      
Total loan charge offs 124 161  
Recoveries of loans previously charged off [Abstract]      
Total recoveries 382 203  
Net loans (recoveries) charged off (258) (42)  
Provision (credit) for credit losses 100 600  
Balance at end of period 50,606 49,220 50,248
Provision (benefit) for credit losses 300 600  
Credit losses on unfunded commitments 200 0  
New York and Other States [Member]      
Loans charged off [Abstract]      
Total loan charge offs [1] 109 161  
Recoveries of loans previously charged off [Abstract]      
Total recoveries [1] 68 203  
Florida [Member]      
Loans charged off [Abstract]      
Total loan charge offs 15 0  
Recoveries of loans previously charged off [Abstract]      
Total recoveries 314 0  
Commercial [Member]      
Allowance for loan losses by portfolio segment [Roll Forward]      
Balance at beginning of period 3,420 2,735 2,735
Loans charged off [Abstract]      
Total loan charge offs 4 0  
Recoveries of loans previously charged off [Abstract]      
Total recoveries 320 0  
Net loans (recoveries) charged off (316) 0  
Provision (credit) for credit losses (713) 7  
Balance at end of period 3,023 2,742 3,420
Commercial [Member] | New York and Other States [Member]      
Loans charged off [Abstract]      
Total loan charge offs [1] 4 0  
Recoveries of loans previously charged off [Abstract]      
Total recoveries [1] 6 0  
Commercial [Member] | Florida [Member]      
Loans charged off [Abstract]      
Total loan charge offs 0 0  
Recoveries of loans previously charged off [Abstract]      
Total recoveries 314 0  
Real Estate Mortgage - 1 to 4 Family [Member]      
Allowance for loan losses by portfolio segment [Roll Forward]      
Balance at beginning of period 46,636 45,625 45,625
Loans charged off [Abstract]      
Total loan charge offs 80 117  
Recoveries of loans previously charged off [Abstract]      
Total recoveries 41 195  
Net loans (recoveries) charged off 39 (78)  
Provision (credit) for credit losses 710 592  
Balance at end of period 47,307 46,295 46,636
Real Estate Mortgage - 1 to 4 Family [Member] | New York and Other States [Member]      
Loans charged off [Abstract]      
Total loan charge offs [1] 80 117  
Recoveries of loans previously charged off [Abstract]      
Total recoveries [1] 41 195  
Real Estate Mortgage - 1 to 4 Family [Member] | Florida [Member]      
Loans charged off [Abstract]      
Total loan charge offs 0 0  
Recoveries of loans previously charged off [Abstract]      
Total recoveries 0 0  
Installment [Member]      
Allowance for loan losses by portfolio segment [Roll Forward]      
Balance at beginning of period 192 218 218
Loans charged off [Abstract]      
Total loan charge offs 40 44 170
Recoveries of loans previously charged off [Abstract]      
Total recoveries 21 8  
Net loans (recoveries) charged off 19 36  
Provision (credit) for credit losses 103 1  
Balance at end of period 276 183 $ 192
Installment [Member] | New York and Other States [Member]      
Loans charged off [Abstract]      
Total loan charge offs [1] 25 44  
Recoveries of loans previously charged off [Abstract]      
Total recoveries [1] 21 8  
Installment [Member] | Florida [Member]      
Loans charged off [Abstract]      
Total loan charge offs 15 0  
Recoveries of loans previously charged off [Abstract]      
Total recoveries $ 0 $ 0  
[1] Includes New York, New Jersey, Vermont and Massachusetts.