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Loan Portfolio and Allowance for Credit Losses, Past Due (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans $ 5,002,879 $ 4,733,201
Recorded Past Due loans   $ 4,733,201
Number of days past due 90 days 90 days
Loans that are 90 days past due and still accruing interest $ 0 $ 0
New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 3,259,038 3,219,914
Recorded Past Due loans [1]   3,219,914
Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 1,743,841 1,513,287
Recorded Past Due loans   1,513,287
Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 17,865  
Recorded Past Due loans   18,117
Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 14,355  
Recorded Past Due loans [1]   14,609
Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 3,510  
Recorded Past Due loans   3,508
30 - 59 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 6,510  
Recorded Past Due loans   7,083
30 - 59 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 4,947  
Recorded Past Due loans [1]   5,619
30 - 59 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 1,563  
Recorded Past Due loans   1,464
60 - 89 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 1,212  
Recorded Past Due loans   1,168
60 - 89 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 1,128  
Recorded Past Due loans [1]   925
60 - 89 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 84  
Recorded Past Due loans   243
90+ Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 10,143  
Recorded Past Due loans   9,866
90+ Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 8,280  
Recorded Past Due loans [1]   8,065
90+ Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 1,863  
Recorded Past Due loans   1,801
Current [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 4,985,014  
Recorded Past Due loans   4,715,084
Current [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 3,244,683  
Recorded Past Due loans [1]   3,205,305
Current [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 1,740,331  
Recorded Past Due loans   1,509,779
Commercial [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 273,515 231,011
Commercial [Member] | Commercial Real Estate [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 252,255 209,922
Recorded Past Due loans   209,922
Loans that are 90 days past due and still accruing interest 0 0
Commercial [Member] | Commercial Real Estate [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 212,754 177,371
Recorded Past Due loans [1]   177,371
Commercial [Member] | Commercial Real Estate [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 39,501 32,551
Recorded Past Due loans   32,551
Commercial [Member] | Commercial Real Estate [Member] | Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 521  
Recorded Past Due loans   161
Commercial [Member] | Commercial Real Estate [Member] | Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 521  
Recorded Past Due loans [1]   161
Commercial [Member] | Commercial Real Estate [Member] | Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   0
Commercial [Member] | Commercial Real Estate [Member] | 30 - 59 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   0
Commercial [Member] | Commercial Real Estate [Member] | 30 - 59 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 0  
Recorded Past Due loans [1]   0
Commercial [Member] | Commercial Real Estate [Member] | 30 - 59 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   0
Commercial [Member] | Commercial Real Estate [Member] | 60 - 89 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   0
Commercial [Member] | Commercial Real Estate [Member] | 60 - 89 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 0  
Recorded Past Due loans [1]   0
Commercial [Member] | Commercial Real Estate [Member] | 60 - 89 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   0
Commercial [Member] | Commercial Real Estate [Member] | 90+ Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 521  
Recorded Past Due loans   161
Commercial [Member] | Commercial Real Estate [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 521  
Recorded Past Due loans [1]   161
Commercial [Member] | Commercial Real Estate [Member] | 90+ Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   0
Commercial [Member] | Commercial Real Estate [Member] | Current [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 251,734  
Recorded Past Due loans   209,761
Commercial [Member] | Commercial Real Estate [Member] | Current [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 212,233  
Recorded Past Due loans [1]   177,210
Commercial [Member] | Commercial Real Estate [Member] | Current [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 39,501  
Recorded Past Due loans   32,551
Commercial [Member] | Other [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 21,260 21,089
Recorded Past Due loans   21,089
Loans that are 90 days past due and still accruing interest 0 0
Commercial [Member] | Other [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 20,863 20,221
Recorded Past Due loans [1]   20,221
Commercial [Member] | Other [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 397 868
Recorded Past Due loans   868
Commercial [Member] | Other [Member] | Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 340  
Recorded Past Due loans   352
Commercial [Member] | Other [Member] | Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 26  
Recorded Past Due loans [1]   38
Commercial [Member] | Other [Member] | Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 314  
Recorded Past Due loans   314
Commercial [Member] | Other [Member] | 30 - 59 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   18
Commercial [Member] | Other [Member] | 30 - 59 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 0  
Recorded Past Due loans [1]   18
Commercial [Member] | Other [Member] | 30 - 59 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   0
Commercial [Member] | Other [Member] | 60 - 89 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 26  
Recorded Past Due loans   0
Commercial [Member] | Other [Member] | 60 - 89 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 26  
Recorded Past Due loans [1]   0
Commercial [Member] | Other [Member] | 60 - 89 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   0
Commercial [Member] | Other [Member] | 90+ Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 314  
Recorded Past Due loans   334
Commercial [Member] | Other [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 0  
Recorded Past Due loans [1]   20
Commercial [Member] | Other [Member] | 90+ Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 314  
Recorded Past Due loans   314
Commercial [Member] | Other [Member] | Current [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 20,920  
Recorded Past Due loans   20,737
Commercial [Member] | Other [Member] | Current [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 20,837  
Recorded Past Due loans [1]   20,183
Commercial [Member] | Other [Member] | Current [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 83  
Recorded Past Due loans   554
Real Estate Mortgage - 1 to 4 Family [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 4,712,478 4,489,883
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 4,307,105 4,146,902
Recorded Past Due loans   4,146,902
Loans that are 90 days past due and still accruing interest 0 0
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 2,756,914 2,776,989
Recorded Past Due loans [1]   2,776,989
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 1,550,191 1,369,913
Recorded Past Due loans   1,369,913
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 13,950  
Recorded Past Due loans   15,216
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 11,149  
Recorded Past Due loans [1]   12,386
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 2,801  
Recorded Past Due loans   2,830
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 30 - 59 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 5,620  
Recorded Past Due loans   5,445
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 30 - 59 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 4,330  
Recorded Past Due loans [1]   4,262
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 30 - 59 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 1,290  
Recorded Past Due loans   1,183
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 60 - 89 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 889  
Recorded Past Due loans   1,164
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 60 - 89 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 811  
Recorded Past Due loans [1]   921
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 60 - 89 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 78  
Recorded Past Due loans   243
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 90+ Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 7,441  
Recorded Past Due loans   8,607
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 6,008  
Recorded Past Due loans [1]   7,203
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | 90+ Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 1,433  
Recorded Past Due loans   1,404
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Current [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 4,293,155  
Recorded Past Due loans   4,131,686
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Current [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 2,745,765  
Recorded Past Due loans [1]   2,764,603
Real Estate Mortgage - 1 to 4 Family [Member] | First Mortgages [Member] | Current [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 1,547,390  
Recorded Past Due loans   1,367,083
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 57,958 56,549
Recorded Past Due loans   56,549
Loans that are 90 days past due and still accruing interest 0 0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 44,152 43,999
Recorded Past Due loans [1]   43,999
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 13,806 12,550
Recorded Past Due loans   12,550
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 394  
Recorded Past Due loans   401
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 315  
Recorded Past Due loans [1]   350
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 79  
Recorded Past Due loans   51
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 30 - 59 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 93  
Recorded Past Due loans   334
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 30 - 59 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 20  
Recorded Past Due loans [1]   283
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 30 - 59 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 73  
Recorded Past Due loans   51
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 60 - 89 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 144  
Recorded Past Due loans   0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 60 - 89 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 138  
Recorded Past Due loans [1]   0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 60 - 89 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 6  
Recorded Past Due loans   0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 90+ Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 157  
Recorded Past Due loans   67
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 157  
Recorded Past Due loans [1]   67
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | 90+ Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Current [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 57,564  
Recorded Past Due loans   56,148
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Current [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 43,837  
Recorded Past Due loans [1]   43,649
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Loans [Member] | Current [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 13,727  
Recorded Past Due loans   12,499
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 347,415 286,432
Recorded Past Due loans   286,432
Loans that are 90 days past due and still accruing interest 0 0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 212,298 191,926
Recorded Past Due loans [1]   191,926
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 135,117 94,506
Recorded Past Due loans   94,506
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 2,465  
Recorded Past Due loans   1,793
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 2,225  
Recorded Past Due loans [1]   1,569
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 240  
Recorded Past Due loans   224
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 30 - 59 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 775  
Recorded Past Due loans   1,202
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 30 - 59 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 591  
Recorded Past Due loans [1]   978
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 30 - 59 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 184  
Recorded Past Due loans   224
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 60 - 89 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 135  
Recorded Past Due loans   0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 60 - 89 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 135  
Recorded Past Due loans [1]   0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 60 - 89 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 90+ Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 1,555  
Recorded Past Due loans   591
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 1,499  
Recorded Past Due loans [1]   591
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | 90+ Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 56  
Recorded Past Due loans   0
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Current [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 344,950  
Recorded Past Due loans   284,639
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Current [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 210,073  
Recorded Past Due loans [1]   190,357
Real Estate Mortgage - 1 to 4 Family [Member] | Home Equity Lines of Credit [Member] | Current [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 134,877  
Recorded Past Due loans   94,282
Installment [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 16,886 12,307
Recorded Past Due loans   12,307
Loans that are 90 days past due and still accruing interest 0 0
Installment [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 12,057 9,408
Recorded Past Due loans [1]   9,408
Installment [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 4,829 2,899
Recorded Past Due loans   2,899
Installment [Member] | Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 195  
Recorded Past Due loans   194
Installment [Member] | Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 119  
Recorded Past Due loans [1]   105
Installment [Member] | Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 76  
Recorded Past Due loans   89
Installment [Member] | 30 - 59 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 22  
Recorded Past Due loans   84
Installment [Member] | 30 - 59 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 6  
Recorded Past Due loans [1]   78
Installment [Member] | 30 - 59 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 16  
Recorded Past Due loans   6
Installment [Member] | 60 - 89 Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 18  
Recorded Past Due loans   4
Installment [Member] | 60 - 89 Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 18  
Recorded Past Due loans [1]   4
Installment [Member] | 60 - 89 Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 0  
Recorded Past Due loans   0
Installment [Member] | 90+ Days Past Due [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 155  
Recorded Past Due loans   106
Installment [Member] | 90+ Days Past Due [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 95  
Recorded Past Due loans [1]   23
Installment [Member] | 90+ Days Past Due [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 60  
Recorded Past Due loans   83
Installment [Member] | Current [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans 16,691  
Recorded Past Due loans   12,113
Installment [Member] | Current [Member] | New York and Other States [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans [1] 11,938  
Recorded Past Due loans [1]   9,303
Installment [Member] | Current [Member] | Florida [Member]    
Aging of the recorded investment in past due loans [Abstract]    
Recorded Past Due loans $ 4,753  
Recorded Past Due loans   $ 2,810
[1] Includes New York, New Jersey, Vermont and Massachusetts.