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LOANS HELD FOR INVESTMENT - Corporation's Residential Mortgage Loans By Origination Year Based on Accrual Status (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Financing Receivable, Recorded Investment [Line Items]          
Loans held for investment $ 13,048,684   $ 13,048,684   $ 12,746,556
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff 25,185 $ 29,045 77,924 $ 84,798  
Puerto Rico and Virgin Islands regions [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Loans held for investment 10,549,215   10,549,215   10,451,606
Florida region [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Loans held for investment 2,499,469   2,499,469   2,294,950
Residential Portfolio Segment [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 236,375   236,375    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 268,618   268,618    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 239,705   239,705    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 213,354   213,354    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 99,370   99,370    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,831,659   1,831,659    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 2,889,081   2,889,081   2,828,431
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff     6    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff     8    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff     5    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff     960    
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff 459 $ 421 979 $ 1,428  
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 236,375   236,375    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 268,618   268,618    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 238,311   238,311    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 211,059   211,059    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 99,269   99,269    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,806,583   1,806,583    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 2,860,215   2,860,215   2,796,482
Residential Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,394   1,394    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 2,295   2,295    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 101   101    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 25,076   25,076    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 28,866   28,866   31,949
Residential Portfolio Segment [Member] | Puerto Rico and Virgin Islands regions [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 181,928   181,928    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 183,428   183,428    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 158,896   158,896    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 147,684   147,684    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 60,420   60,420    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,634,662   1,634,662    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 2,367,018   2,367,018   2,323,205
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff     6    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff     5    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff     960    
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff     971    
Residential Portfolio Segment [Member] | Puerto Rico and Virgin Islands regions [Member] | Performing Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 181,928   181,928    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 183,428   183,428    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 158,896   158,896    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 147,289   147,289    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 60,319   60,319    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,616,541   1,616,541    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 2,348,401   2,348,401   2,299,796
Residential Portfolio Segment [Member] | Puerto Rico and Virgin Islands regions [Member] | Nonperforming Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 395   395    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 101   101    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 18,121   18,121    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 18,617   18,617   23,409
Residential Portfolio Segment [Member] | Florida region [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 54,447   54,447    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 85,190   85,190    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 80,809   80,809    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 65,670   65,670    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 38,950   38,950    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 196,997   196,997    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 522,063   522,063   505,226
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff     8    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff     0    
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff     8    
Residential Portfolio Segment [Member] | Florida region [Member] | Performing Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 54,447   54,447    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 85,190   85,190    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 79,415   79,415    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 63,770   63,770    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 38,950   38,950    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 190,042   190,042    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 511,814   511,814   496,686
Residential Portfolio Segment [Member] | Florida region [Member] | Nonperforming Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,394   1,394    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,900   1,900    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 6,955   6,955    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 10,249   10,249   8,540
Residential Portfolio Segment [Member] | FHA/VA Government-Guaranteed Loans [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 204   204    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,125   1,125    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 759   759    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,489   1,489    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 84,672   84,672    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 88,249   88,249   92,252
Residential Portfolio Segment [Member] | FHA/VA Government-Guaranteed Loans [Member] | Performing Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 204   204    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,125   1,125    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 759   759    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,489   1,489    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 84,672   84,672    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 88,249   88,249   92,252
Residential Portfolio Segment [Member] | FHA/VA Government-Guaranteed Loans [Member] | Nonperforming Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 0   0   0
Residential Portfolio Segment [Member] | FHA/VA Government-Guaranteed Loans [Member] | Puerto Rico and Virgin Islands regions [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 204   204    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,125   1,125    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 759   759    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,489   1,489    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 83,578   83,578    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 87,155   87,155   91,124
Residential Portfolio Segment [Member] | FHA/VA Government-Guaranteed Loans [Member] | Puerto Rico and Virgin Islands regions [Member] | Performing Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 204   204    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,125   1,125    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 759   759    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 1,489   1,489    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 83,578   83,578    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 87,155   87,155   91,124
Residential Portfolio Segment [Member] | FHA/VA Government-Guaranteed Loans [Member] | Puerto Rico and Virgin Islands regions [Member] | Nonperforming Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 0   0   0
Residential Portfolio Segment [Member] | FHA/VA Government-Guaranteed Loans [Member] | Florida region [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,094   1,094    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 1,094   1,094   1,128
Residential Portfolio Segment [Member] | FHA/VA Government-Guaranteed Loans [Member] | Florida region [Member] | Performing Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,094   1,094    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 1,094   1,094   1,128
Residential Portfolio Segment [Member] | FHA/VA Government-Guaranteed Loans [Member] | Florida region [Member] | Nonperforming Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 0   0   0
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 236,375   236,375    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 268,414   268,414    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 238,580   238,580    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 212,595   212,595    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 97,881   97,881    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,746,987   1,746,987    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 2,800,832   2,800,832   2,736,179
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Performing Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 236,375   236,375    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 268,414   268,414    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 237,186   237,186    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 210,300   210,300    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 97,780   97,780    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,721,911   1,721,911    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 2,771,966   2,771,966   2,704,230
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Nonperforming Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,394   1,394    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 2,295   2,295    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 101   101    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 25,076   25,076    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 28,866   28,866   31,949
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Puerto Rico and Virgin Islands regions [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 181,928   181,928    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 183,224   183,224    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 157,771   157,771    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 146,925   146,925    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 58,931   58,931    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,551,084   1,551,084    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 2,279,863   2,279,863   2,232,081
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Puerto Rico and Virgin Islands regions [Member] | Performing Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 181,928   181,928    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 183,224   183,224    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 157,771   157,771    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 146,530   146,530    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 58,830   58,830    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 1,532,963   1,532,963    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 2,261,246   2,261,246   2,208,672
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Puerto Rico and Virgin Islands regions [Member] | Nonperforming Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 395   395    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 101   101    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 18,121   18,121    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 18,617   18,617   23,409
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Florida region [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 54,447   54,447    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 85,190   85,190    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 80,809   80,809    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 65,670   65,670    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 38,950   38,950    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 195,903   195,903    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 520,969   520,969   504,098
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Florida region [Member] | Performing Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 54,447   54,447    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 85,190   85,190    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 79,415   79,415    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 63,770   63,770    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 38,950   38,950    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 188,948   188,948    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment 510,720   510,720   495,558
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Florida region [Member] | Nonperforming Financial Instruments [Member]          
Financing Receivable, Recorded Investment [Line Items]          
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year 1,394   1,394    
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year 1,900   1,900    
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year 0   0    
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year 6,955   6,955    
Financing Receivable, Excluding Accrued Interest, Revolving 0   0    
Loans held for investment $ 10,249   $ 10,249   $ 8,540