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	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	$ 12,185,483	$ 11,552,825
Charge-offs	88,102	57,330	$ 80,710
Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	10,163,222	9,464,474
Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	2,022,261	2,088,351	1,948,716
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	551,064	575,910
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	535,474	359,933
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	349,545	263,474
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	204,229	584,936
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	383,840	165,560
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	252,592	242,707
Financing Receivable, Excluding Accrued Interest, Revolving	897,488	693,743
Loans held for investment	3,174,232	2,886,263
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years Before Current Fiscal Year, Writeoff	376
Financing Receivable, Year Five, Originated, Four Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	6,420
Financing Receivable, Revolving, Writeoff	140
Charge-offs	6,936	2,067	1,887
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [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	411,264	298,273
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	298,285	196,723
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	163,062	186,180
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	156,583	330,606
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	262,801	99,076
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	190,510	192,070
Financing Receivable, Excluding Accrued Interest, Revolving	766,903	557,181
Loans held for investment	2,249,408	1,860,109
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	218
Financing Receivable, Revolving, Writeoff	140
Charge-offs	358
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	139,800	277,637
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	237,189	163,210
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	186,483	77,294
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	47,646	254,330
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	121,039	66,484
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	62,082	50,637
Financing Receivable, Excluding Accrued Interest, Revolving	130,585	136,562
Loans held for investment	924,824	1,026,154
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years Before Current Fiscal Year, Writeoff	376
Financing Receivable, Year Five, Originated, Four Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	6,202
Financing Receivable, Revolving, Writeoff	0
Charge-offs	6,578
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	550,521	575,569
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	535,474	358,670
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	325,634	261,883
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	203,378	539,491
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	358,604	154,968
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	219,692	214,229
Financing Receivable, Excluding Accrued Interest, Revolving	859,831	663,913
Loans held for investment	3,053,134	2,768,723
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, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	410,721	297,932
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	298,285	195,460
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	158,636	184,856
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	155,984	315,987
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	249,481	88,484
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	171,586	179,201
Financing Receivable, Excluding Accrued Interest, Revolving	729,246	527,652
Loans held for investment	2,173,939	1,789,572
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Pass [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	139,800	277,637
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	237,189	163,210
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	166,998	77,027
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	47,394	223,504
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	109,123	66,484
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	48,106	35,028
Financing Receivable, Excluding Accrued Interest, Revolving	130,585	136,261
Loans held for investment	879,195	979,151
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	542	138
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	912
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	20,063	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	6,474
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	12,201	9,867
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	13,283	14,562
Financing Receivable, Excluding Accrued Interest, Revolving	36,333	29,176
Loans held for investment	82,422	61,129
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, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	542	138
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	912
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	578	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	500
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	476	9,867
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	2,447	2,631
Financing Receivable, Excluding Accrued Interest, Revolving	36,333	29,176
Loans held for investment	40,376	43,224
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Special Mention [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	19,485	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	5,974
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	11,725	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	10,836	11,931
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Loans held for investment	42,046	17,905
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	1	203
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	351
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	3,848	1,591
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	851	38,971
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	13,035	725
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	19,617	13,916
Financing Receivable, Excluding Accrued Interest, Revolving	1,324	654
Loans held for investment	38,676	56,411
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, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	1	203
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	351
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	3,848	1,324
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	599	14,119
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	12,844	725
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	16,477	10,238
Financing Receivable, Excluding Accrued Interest, Revolving	1,324	353
Loans held for investment	35,093	27,313
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Substandard [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	267
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	252	24,852
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	191	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	3,140	3,678
Financing Receivable, Excluding Accrued Interest, Revolving	0	301
Loans held for investment	3,583	29,098
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Doubtful [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
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, 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
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Doubtful [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	0	0
Financing Receivable, Excluding Accrued Interest, Revolving	0	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, 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
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, 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
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Loss [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	0	0
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	205,333	569,053
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	572,311	211,981
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	198,724	416,265
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	390,117	374,840
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	339,410	277,241
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	583,426	489,889
Financing Receivable, Excluding Accrued Interest, Revolving	27,762	19,582
Loans held for investment	2,317,083	2,358,851
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	1,133
Financing Receivable, Revolving, Writeoff	0
Charge-offs	1,133	85	1,494
Commercial Portfolio Segment [Member] \| Mortgage Receivable [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	176,519	392,922
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	386,213	141,456
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	135,163	366,698
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	349,280	306,692
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	276,078	205,837
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	463,966	419,573
Financing Receivable, Excluding Accrued Interest, Revolving	3,418	1,026
Loans held for investment	1,790,637	1,834,204
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	1,133
Financing Receivable, Revolving, Writeoff	0
Charge-offs	1,133
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	28,814	176,131
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	186,098	70,525
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	63,561	49,567
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	40,837	68,148
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	63,332	71,404
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	119,460	70,316
Financing Receivable, Excluding Accrued Interest, Revolving	24,344	18,556
Loans held for investment	526,446	524,647
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Revolving, Writeoff	0
Charge-offs	0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	205,333	567,720
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	567,793	211,981
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	198,724	404,528
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	358,955	351,793
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	339,410	265,199
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	445,880	338,109
Financing Receivable, Excluding Accrued Interest, Revolving	27,762	19,582
Loans held for investment	2,143,857	2,158,912
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Pass [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	176,519	391,589
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	381,695	141,456
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	135,163	363,115
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	319,111	296,954
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	276,078	193,795
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	326,420	267,793
Financing Receivable, Excluding Accrued Interest, Revolving	3,418	1,026
Loans held for investment	1,618,404	1,655,728
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Pass [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	28,814	176,131
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	186,098	70,525
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	63,561	41,413
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	39,844	54,839
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	63,332	71,404
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	119,460	70,316
Financing Receivable, Excluding Accrued Interest, Revolving	24,344	18,556
Loans held for investment	525,453	503,184
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	1,198
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	4,394	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	10,569
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	30,169	20,228
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	12,042
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	112,063	121,673
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Loans held for investment	146,626	165,710
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, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	1,198
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	4,394	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	3,583
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	30,169	6,919
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	12,042
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	112,063	121,673
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Loans held for investment	146,626	145,415
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Special Mention [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	6,986
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	13,309
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	20,295
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	135
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	124	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	1,168
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	993	2,819
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	25,483	30,107
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Loans held for investment	26,600	34,229
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Substandard [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	135
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	124	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	2,819
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	25,483	30,107
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Loans held for investment	25,607	33,061
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Substandard [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	1,168
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	993	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	993	1,168
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Doubtful [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
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Doubtful [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	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
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Doubtful [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	0	0
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Loss [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
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Loss [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	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
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Loss [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	0	0
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Loans held for investment	0	0
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	53,670	57,999
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	98,537	61,226
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	54,225	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	14
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	5,965	6,924
Financing Receivable, Excluding Accrued Interest, Revolving	2,380	6,790
Loans held for investment	214,777	132,953
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	62
Financing Receivable, Revolving, Writeoff	0
Charge-offs	62	123	$ 87
Commercial Portfolio Segment [Member] \| Construction 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	52,675	9,463
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	40,825	18,385
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	15,936	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	5,965	6,924
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Loans held for investment	115,401	34,772
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	62
Financing Receivable, Revolving, Writeoff	0
Charge-offs	62
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	995	48,536
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	57,712	42,841
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	38,289	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	14
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	2,380	6,790
Loans held for investment	99,376	98,181
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years Before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Revolving, Writeoff	0
Charge-offs	0
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	53,670	57,999
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	98,537	61,226
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	54,225	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	14
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	3,734	4,031
Financing Receivable, Excluding Accrued Interest, Revolving	2,380	6,790
Loans held for investment	212,546	130,060
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Pass [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	52,675	9,463
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	40,825	18,385
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	15,936	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	3,734	4,031
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Loans held for investment	113,170	31,879
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Pass [Member] \| Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	995	48,536
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	57,712	42,841
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	38,289	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	14
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

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