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	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	$ 11,097,705	$ 11,060,658
Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	9,155,295	9,113,918
Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	1,942,410	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	53,985
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	491,886
Financing Receivable, Originated Two Years before Latest Fiscal Year	318,168
Financing Receivable, Originated Three Years before Latest Fiscal Year	633,259
Financing Receivable, Originated Four Years before Latest Fiscal Year	307,794
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	454,569
Financing Receivable, Revolving	620,595
Loans held for investment	2,880,256	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	15,696
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	280,651
Financing Receivable, Originated Two Years before Latest Fiscal Year	200,406
Financing Receivable, Originated Three Years before Latest Fiscal Year	355,916
Financing Receivable, Originated Four Years before Latest Fiscal Year	178,997
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	373,962
Financing Receivable, Revolving	521,298
Loans held for investment	1,926,926	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	38,289
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	211,235
Financing Receivable, Originated Two Years before Latest Fiscal Year	117,762
Financing Receivable, Originated Three Years before Latest Fiscal Year	277,343
Financing Receivable, Originated Four Years before Latest Fiscal Year	128,797
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	80,607
Financing Receivable, Revolving	99,297
Loans held for investment	953,330	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	53,738
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	481,956
Financing Receivable, Originated Two Years before Latest Fiscal Year	291,206
Financing Receivable, Originated Three Years before Latest Fiscal Year	565,289
Financing Receivable, Originated Four Years before Latest Fiscal Year	292,424
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	390,157
Financing Receivable, Revolving	589,448
Loans held for investment	2,664,218	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	15,449
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	270,721
Financing Receivable, Originated Two Years before Latest Fiscal Year	197,640
Financing Receivable, Originated Three Years before Latest Fiscal Year	341,326
Financing Receivable, Originated Four Years before Latest Fiscal Year	176,703
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	326,633
Financing Receivable, Revolving	508,459
Loans held for investment	1,836,931	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	38,289
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	211,235
Financing Receivable, Originated Two Years before Latest Fiscal Year	93,566
Financing Receivable, Originated Three Years before Latest Fiscal Year	223,963
Financing Receivable, Originated Four Years before Latest Fiscal Year	115,721
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	63,524
Financing Receivable, Revolving	80,989
Loans held for investment	827,287	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	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	9,493
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,332
Financing Receivable, Originated Three Years before Latest Fiscal Year	19,293
Financing Receivable, Originated Four Years before Latest Fiscal Year	13,318
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	23,748
Financing Receivable, Revolving	24,474
Loans held for investment	91,658	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	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	9,493
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,332
Financing Receivable, Originated Three Years before Latest Fiscal Year	415
Financing Receivable, Originated Four Years before Latest Fiscal Year	242
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,192
Financing Receivable, Revolving	6,501
Loans held for investment	29,175	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	18,878
Financing Receivable, Originated Four Years before Latest Fiscal Year	13,076
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	12,556
Financing Receivable, Revolving	17,973
Loans held for investment	62,483	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	247
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	437
Financing Receivable, Originated Two Years before Latest Fiscal Year	25,630
Financing Receivable, Originated Three Years before Latest Fiscal Year	48,677
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,052
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	40,664
Financing Receivable, Revolving	6,673
Loans held for investment	124,380	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	247
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	437
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,434
Financing Receivable, Originated Three Years before Latest Fiscal Year	14,175
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,052
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	36,137
Financing Receivable, Revolving	6,338
Loans held for investment	60,820	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	24,196
Financing Receivable, Originated Three Years before Latest Fiscal Year	34,502
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,527
Financing Receivable, Revolving	335
Loans held for investment	63,560	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	121,182
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	250,958
Financing Receivable, Originated Two Years before Latest Fiscal Year	462,928
Financing Receivable, Originated Three Years before Latest Fiscal Year	401,447
Financing Receivable, Originated Four Years before Latest Fiscal Year	304,887
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	676,322
Financing Receivable, Revolving	19,978
Loans held for investment	2,237,702	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	77,652
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	158,433
Financing Receivable, Originated Two Years before Latest Fiscal Year	373,160
Financing Receivable, Originated Three Years before Latest Fiscal Year	301,890
Financing Receivable, Originated Four Years before Latest Fiscal Year	227,705
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	595,004
Financing Receivable, Revolving	13
Loans held for investment	1,733,857	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	43,530
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	92,525
Financing Receivable, Originated Two Years before Latest Fiscal Year	89,768
Financing Receivable, Originated Three Years before Latest Fiscal Year	99,557
Financing Receivable, Originated Four Years before Latest Fiscal Year	77,182
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	81,318
Financing Receivable, Revolving	19,965
Loans held for investment	503,845	465,238
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	121,042
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	249,573
Financing Receivable, Originated Two Years before Latest Fiscal Year	444,141
Financing Receivable, Originated Three Years before Latest Fiscal Year	298,673
Financing Receivable, Originated Four Years before Latest Fiscal Year	278,307
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	473,112
Financing Receivable, Revolving	19,978
Loans held for investment	1,884,826	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	77,512
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	157,048
Financing Receivable, Originated Two Years before Latest Fiscal Year	362,643
Financing Receivable, Originated Three Years before Latest Fiscal Year	212,643
Financing Receivable, Originated Four Years before Latest Fiscal Year	207,859
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	412,942
Financing Receivable, Revolving	13
Loans held for investment	1,430,660	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	43,530
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	92,525
Financing Receivable, Originated Two Years before Latest Fiscal Year	81,498
Financing Receivable, Originated Three Years before Latest Fiscal Year	86,030
Financing Receivable, Originated Four Years before Latest Fiscal Year	70,448
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	60,170
Financing Receivable, Revolving	19,965
Loans held for investment	454,166	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	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	18,787
Financing Receivable, Originated Three Years before Latest Fiscal Year	99,798
Financing Receivable, Originated Four Years before Latest Fiscal Year	25,805
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	160,621
Financing Receivable, Revolving	0
Loans held for investment	305,011	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	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	10,517
Financing Receivable, Originated Three Years before Latest Fiscal Year	86,271
Financing Receivable, Originated Four Years before Latest Fiscal Year	19,071
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	139,787
Financing Receivable, Revolving	0
Loans held for investment	255,646	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	8,270
Financing Receivable, Originated Three Years before Latest Fiscal Year	13,527
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,734
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	20,834
Financing Receivable, Revolving	0
Loans held for investment	49,365	60,618
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	140
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,385
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,976
Financing Receivable, Originated Four Years before Latest Fiscal Year	775
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	42,589
Financing Receivable, Revolving	0
Loans held for investment	47,865	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	140
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,385
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,976
Financing Receivable, Originated Four Years before Latest Fiscal Year	775
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	42,275
Financing Receivable, Revolving	0
Loans held for investment	47,551	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	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	314
Financing Receivable, Revolving	0
Loans held for investment	314	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	6,982
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	41,061
Financing Receivable, Originated Two Years before Latest Fiscal Year	10,366
Financing Receivable, Originated Three Years before Latest Fiscal Year	23,033
Financing Receivable, Originated Four Years before Latest Fiscal Year	22,144
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	8,322
Financing Receivable, Revolving	0
Loans held for investment	111,908	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	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,222
Financing Receivable, Originated Two Years before Latest Fiscal Year	10,366
Financing Receivable, Originated Three Years before Latest Fiscal Year	22,950
Financing Receivable, Originated Four Years before Latest Fiscal Year	560
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	8,322
Financing Receivable, Revolving	0
Loans held for investment	45,420	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	6,982
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	37,839
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	83
Financing Receivable, Originated Four Years before Latest Fiscal Year	21,584
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	66,488	95,866
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	6,982
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	41,061
Financing Receivable, Originated Two Years before Latest Fiscal Year	10,366
Financing Receivable, Originated Three Years before Latest Fiscal Year	22,270
Financing Receivable, Originated Four Years before Latest Fiscal Year	21,584
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,988
Financing Receivable, Revolving	0
Loans held for investment	107,251	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	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,222
Financing Receivable, Originated Two Years before Latest Fiscal Year	10,366
Financing Receivable, Originated Three Years before Latest Fiscal Year	22,187
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,988
Financing Receivable, Revolving	0
Loans held for investment	40,763	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	6,982
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	37,839
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	83
Financing Receivable, Originated Four Years before Latest Fiscal Year	21,584
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Loans held for investment	66,488	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	763
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	763	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	763
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	763	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	560
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,334
Financing Receivable, Revolving	0
Loans held for investment	3,894	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	560
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,334
Financing Receivable, Revolving	0
Loans held for investment	3,894	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