LOANS HELD FOR INVESTMENT - Corporation's Commercial and Construction Loans by Portfolio Classes and by Origination Year Based on the Internal Credit Risk Category (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	$ 11,298,618	$ 11,060,658
Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	9,247,998	9,113,918
Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	2,050,620	1,946,740
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	371,743
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	374,050
Financing Receivable, Originated Two Years before Latest Fiscal Year	297,266
Financing Receivable, Originated Three Years before Latest Fiscal Year	596,756
Financing Receivable, Originated Four Years before Latest Fiscal Year	196,648
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	356,418
Financing Receivable, Revolving	665,405
Loans held for investment	2,858,286	2,887,251
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	116,235
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	204,721
Financing Receivable, Originated Two Years before Latest Fiscal Year	190,999
Financing Receivable, Originated Three Years before Latest Fiscal Year	338,556
Financing Receivable, Originated Four Years before Latest Fiscal Year	129,140
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	294,049
Financing Receivable, Revolving	568,466
Loans held for investment	1,842,166	1,946,597
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	255,508
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	169,329
Financing Receivable, Originated Two Years before Latest Fiscal Year	106,267
Financing Receivable, Originated Three Years before Latest Fiscal Year	258,200
Financing Receivable, Originated Four Years before Latest Fiscal Year	67,508
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	62,369
Financing Receivable, Revolving	96,939
Loans held for investment	1,016,120	940,654
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	371,533
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	369,957
Financing Receivable, Originated Two Years before Latest Fiscal Year	271,713
Financing Receivable, Originated Three Years before Latest Fiscal Year	549,215
Financing Receivable, Originated Four Years before Latest Fiscal Year	194,454
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	303,915
Financing Receivable, Revolving	638,601
Loans held for investment	2,699,388	2,679,375
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Pass [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	116,025
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	200,628
Financing Receivable, Originated Two Years before Latest Fiscal Year	189,639
Financing Receivable, Originated Three Years before Latest Fiscal Year	324,443
Financing Receivable, Originated Four Years before Latest Fiscal Year	126,946
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	258,087
Financing Receivable, Revolving	541,962
Loans held for investment	1,757,730	1,852,552
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Pass [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	255,508
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	169,329
Financing Receivable, Originated Two Years before Latest Fiscal Year	82,074
Financing Receivable, Originated Three Years before Latest Fiscal Year	224,772
Financing Receivable, Originated Four Years before Latest Fiscal Year	67,508
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	45,828
Financing Receivable, Revolving	96,639
Loans held for investment	941,658	826,823
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	145
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,972
Financing Receivable, Originated Four Years before Latest Fiscal Year	236
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	14,837
Financing Receivable, Revolving	24,830
Loans held for investment	46,020	82,596
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Special Mention [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	145
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	236
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,652
Financing Receivable, Revolving	24,830
Loans held for investment	27,863	32,650
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Special Mention [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,972
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	12,185
Financing Receivable, Revolving	0
Loans held for investment	18,157	49,946
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	65
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,093
Financing Receivable, Originated Two Years before Latest Fiscal Year	25,553
Financing Receivable, Originated Three Years before Latest Fiscal Year	41,569
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,958
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	37,666
Financing Receivable, Revolving	1,974
Loans held for investment	112,878	125,280
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Substandard [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	65
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,093
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,360
Financing Receivable, Originated Three Years before Latest Fiscal Year	14,113
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,958
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	33,310
Financing Receivable, Revolving	1,674
Loans held for investment	56,573	61,395
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Substandard [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	24,193
Financing Receivable, Originated Three Years before Latest Fiscal Year	27,456
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,356
Financing Receivable, Revolving	300
Loans held for investment	56,305	63,885
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Doubtful [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Doubtful [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Loss [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Loss [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	400,335
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	221,862
Financing Receivable, Originated Two Years before Latest Fiscal Year	419,944
Financing Receivable, Originated Three Years before Latest Fiscal Year	377,370
Financing Receivable, Originated Four Years before Latest Fiscal Year	283,146
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	543,493
Financing Receivable, Revolving	19,464
Loans held for investment	2,265,614	2,167,469
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	243,226
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	150,940
Financing Receivable, Originated Two Years before Latest Fiscal Year	368,755
Financing Receivable, Originated Three Years before Latest Fiscal Year	308,802
Financing Receivable, Originated Four Years before Latest Fiscal Year	210,873
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	471,619
Financing Receivable, Revolving	232
Loans held for investment	1,754,447	1,702,231
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	157,109
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	70,922
Financing Receivable, Originated Two Years before Latest Fiscal Year	51,189
Financing Receivable, Originated Three Years before Latest Fiscal Year	68,568
Financing Receivable, Originated Four Years before Latest Fiscal Year	72,273
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	71,874
Financing Receivable, Revolving	19,232
Loans held for investment	511,167	465,238
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	398,979
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	221,862
Financing Receivable, Originated Two Years before Latest Fiscal Year	408,141
Financing Receivable, Originated Three Years before Latest Fiscal Year	277,395
Financing Receivable, Originated Four Years before Latest Fiscal Year	251,553
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	380,531
Financing Receivable, Revolving	19,464
Loans held for investment	1,957,925	1,799,873
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Pass [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	241,870
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	150,940
Financing Receivable, Originated Two Years before Latest Fiscal Year	365,144
Financing Receivable, Originated Three Years before Latest Fiscal Year	222,211
Financing Receivable, Originated Four Years before Latest Fiscal Year	179,280
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	308,966
Financing Receivable, Revolving	232
Loans held for investment	1,468,643	1,395,569
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Pass [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	157,109
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	70,922
Financing Receivable, Originated Two Years before Latest Fiscal Year	42,997
Financing Receivable, Originated Three Years before Latest Fiscal Year	55,184
Financing Receivable, Originated Four Years before Latest Fiscal Year	72,273
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	71,565
Financing Receivable, Revolving	19,232
Loans held for investment	489,282	404,304
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	1,218
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	10,635
Financing Receivable, Originated Three Years before Latest Fiscal Year	97,048
Financing Receivable, Originated Four Years before Latest Fiscal Year	30,832
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	130,324
Financing Receivable, Revolving	0
Loans held for investment	270,057	319,881
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Special Mention [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	1,218
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,611
Financing Receivable, Originated Three Years before Latest Fiscal Year	83,664
Financing Receivable, Originated Four Years before Latest Fiscal Year	30,832
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	130,324
Financing Receivable, Revolving	0
Loans held for investment	249,649	259,263
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Special Mention [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,024
Financing Receivable, Originated Three Years before Latest Fiscal Year	13,384
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	20,408	60,618
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	138
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,168
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,927
Financing Receivable, Originated Four Years before Latest Fiscal Year	761
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	32,638
Financing Receivable, Revolving	0
Loans held for investment	37,632	47,715
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Substandard [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	138
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,927
Financing Receivable, Originated Four Years before Latest Fiscal Year	761
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	32,329
Financing Receivable, Revolving	0
Loans held for investment	36,155	47,399
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Substandard [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,168
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	309
Financing Receivable, Revolving	0
Loans held for investment	1,477	316
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Doubtful [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Doubtful [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Loss [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Loss [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	55,797
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	57,262
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	14
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,885
Financing Receivable, Revolving	4,036
Loans held for investment	123,994	138,999
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	8,853
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	11,978
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,885
Financing Receivable, Revolving	0
Loans held for investment	27,716	43,133
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	46,944
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	45,284
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	14
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	4,036
Loans held for investment	96,278	95,866
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	55,797
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	57,262
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	14
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,958
Financing Receivable, Revolving	4,036
Loans held for investment	121,067	133,932
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Pass [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	8,853
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	11,978
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,958
Financing Receivable, Revolving	0
Loans held for investment	24,789	38,066
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Pass [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	46,944
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	45,284
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	14
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	4,036
Loans held for investment	96,278	95,866
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	765
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Special Mention [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	765
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Special Mention [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,927
Financing Receivable, Revolving	0
Loans held for investment	2,927	4,302
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Substandard [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,927
Financing Receivable, Revolving	0
Loans held for investment	2,927	4,302
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Substandard [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Doubtful [Member] \| Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]

LOANS HELD FOR INVESTMENT - Corporation's Commercial and Construction Loans by Portfolio Classes and by Origination Year Based on the Internal Credit Risk Category (Detail) - USD ($)
$ in Thousands