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	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	$ 11,206,874	$ 11,060,658
Puerto Rico and Virgin Islands regions [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	9,217,727	9,113,918
Florida region [Member}
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	1,989,147	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	200,432
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	436,981
Financing Receivable, Originated Two Years before Latest Fiscal Year	317,223
Financing Receivable, Originated Three Years before Latest Fiscal Year	600,527
Financing Receivable, Originated Four Years before Latest Fiscal Year	206,794
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	389,597
Financing Receivable, Revolving	711,363
Loans held for investment	2,862,917	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	58,936
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	248,228
Financing Receivable, Originated Two Years before Latest Fiscal Year	199,175
Financing Receivable, Originated Three Years before Latest Fiscal Year	347,821
Financing Receivable, Originated Four Years before Latest Fiscal Year	137,025
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	311,871
Financing Receivable, Revolving	566,154
Loans held for investment	1,869,210	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	141,496
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	188,753
Financing Receivable, Originated Two Years before Latest Fiscal Year	118,048
Financing Receivable, Originated Three Years before Latest Fiscal Year	252,706
Financing Receivable, Originated Four Years before Latest Fiscal Year	69,769
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	77,726
Financing Receivable, Revolving	145,209
Loans held for investment	993,707	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	199,358
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	423,448
Financing Receivable, Originated Two Years before Latest Fiscal Year	290,337
Financing Receivable, Originated Three Years before Latest Fiscal Year	537,797
Financing Receivable, Originated Four Years before Latest Fiscal Year	191,465
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	332,600
Financing Receivable, Revolving	665,033
Loans held for investment	2,640,038	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	57,862
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	234,695
Financing Receivable, Originated Two Years before Latest Fiscal Year	196,485
Financing Receivable, Originated Three Years before Latest Fiscal Year	333,737
Financing Receivable, Originated Four Years before Latest Fiscal Year	134,771
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	271,681
Financing Receivable, Revolving	542,321
Loans held for investment	1,771,552	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	141,496
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	188,753
Financing Receivable, Originated Two Years before Latest Fiscal Year	93,852
Financing Receivable, Originated Three Years before Latest Fiscal Year	204,060
Financing Receivable, Originated Four Years before Latest Fiscal Year	56,694
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	60,919
Financing Receivable, Revolving	122,712
Loans held for investment	868,486	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	1,037
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	9,395
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,293
Financing Receivable, Originated Three Years before Latest Fiscal Year	14,682
Financing Receivable, Originated Four Years before Latest Fiscal Year	13,314
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	18,059
Financing Receivable, Revolving	38,172
Loans held for investment	95,952	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	1,037
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	9,395
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,293
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	239
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,696
Financing Receivable, Revolving	16,010
Loans held for investment	33,670	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	14,682
Financing Receivable, Originated Four Years before Latest Fiscal Year	13,075
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	12,363
Financing Receivable, Revolving	22,162
Loans held for investment	62,282	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	37
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,138
Financing Receivable, Originated Two Years before Latest Fiscal Year	25,593
Financing Receivable, Originated Three Years before Latest Fiscal Year	48,048
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,015
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	38,938
Financing Receivable, Revolving	8,158
Loans held for investment	126,927	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	37
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,138
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,397
Financing Receivable, Originated Three Years before Latest Fiscal Year	14,084
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,015
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	34,494
Financing Receivable, Revolving	7,823
Loans held for investment	63,988	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	33,964
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,444
Financing Receivable, Revolving	335
Loans held for investment	62,939	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	316,568
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	238,204
Financing Receivable, Originated Two Years before Latest Fiscal Year	423,479
Financing Receivable, Originated Three Years before Latest Fiscal Year	394,703
Financing Receivable, Originated Four Years before Latest Fiscal Year	307,296
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	572,895
Financing Receivable, Revolving	16,968
Loans held for investment	2,270,113	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	208,431
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	157,244
Financing Receivable, Originated Two Years before Latest Fiscal Year	371,979
Financing Receivable, Originated Three Years before Latest Fiscal Year	324,067
Financing Receivable, Originated Four Years before Latest Fiscal Year	223,949
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	499,196
Financing Receivable, Revolving	13
Loans held for investment	1,784,879	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	108,137
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	80,960
Financing Receivable, Originated Two Years before Latest Fiscal Year	51,500
Financing Receivable, Originated Three Years before Latest Fiscal Year	70,636
Financing Receivable, Originated Four Years before Latest Fiscal Year	83,347
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	73,699
Financing Receivable, Revolving	16,955
Loans held for investment	485,234	465,238
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	315,083
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	237,567
Financing Receivable, Originated Two Years before Latest Fiscal Year	404,823
Financing Receivable, Originated Three Years before Latest Fiscal Year	293,934
Financing Receivable, Originated Four Years before Latest Fiscal Year	275,473
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	401,865
Financing Receivable, Revolving	16,968
Loans held for investment	1,945,713	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	206,946
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	156,607
Financing Receivable, Originated Two Years before Latest Fiscal Year	361,553
Financing Receivable, Originated Three Years before Latest Fiscal Year	236,728
Financing Receivable, Originated Four Years before Latest Fiscal Year	192,126
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	328,477
Financing Receivable, Revolving	13
Loans held for investment	1,482,450	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	108,137
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	80,960
Financing Receivable, Originated Two Years before Latest Fiscal Year	43,270
Financing Receivable, Originated Three Years before Latest Fiscal Year	57,206
Financing Receivable, Originated Four Years before Latest Fiscal Year	83,347
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	73,388
Financing Receivable, Revolving	16,955
Loans held for investment	463,263	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	1,345
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	17,488
Financing Receivable, Originated Three Years before Latest Fiscal Year	97,817
Financing Receivable, Originated Four Years before Latest Fiscal Year	31,055
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	136,282
Financing Receivable, Revolving	0
Loans held for investment	283,987	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	1,345
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	10,426
Financing Receivable, Originated Three Years before Latest Fiscal Year	84,387
Financing Receivable, Originated Four Years before Latest Fiscal Year	31,055
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	136,282
Financing Receivable, Revolving	0
Loans held for investment	263,495	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	7,062
Financing Receivable, Originated Three Years before Latest Fiscal Year	13,430
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	20,492	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	637
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,168
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,952
Financing Receivable, Originated Four Years before Latest Fiscal Year	768
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	34,748
Financing Receivable, Revolving	0
Loans held for investment	40,413	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	637
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,952
Financing Receivable, Originated Four Years before Latest Fiscal Year	768
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	34,437
Financing Receivable, Revolving	0
Loans held for investment	38,934	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	311
Financing Receivable, Revolving	0
Loans held for investment	1,479	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	50,016
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	56,718
Financing Receivable, Originated Two Years before Latest Fiscal Year	962
Financing Receivable, Originated Three Years before Latest Fiscal Year	106
Financing Receivable, Originated Four Years before Latest Fiscal Year	274
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,864
Financing Receivable, Revolving	370
Loans held for investment	115,310	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	4,741
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	12,633
Financing Receivable, Originated Two Years before Latest Fiscal Year	962
Financing Receivable, Originated Three Years before Latest Fiscal Year	3
Financing Receivable, Originated Four Years before Latest Fiscal Year	274
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,864
Financing Receivable, Revolving	0
Loans held for investment	25,477	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	45,275
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	44,085
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	103
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	370
Loans held for investment	89,833	95,866
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	50,016
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	56,718
Financing Receivable, Originated Two Years before Latest Fiscal Year	962
Financing Receivable, Originated Three Years before Latest Fiscal Year	103
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,747
Financing Receivable, Revolving	370
Loans held for investment	111,916	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	4,741
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	12,633
Financing Receivable, Originated Two Years before Latest Fiscal Year	962
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	3,747
Financing Receivable, Revolving	0
Loans held for investment	22,083	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	45,275
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	44,085
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	103
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	370
Loans held for investment	89,833	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	3
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	3	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	3
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	3	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	274
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,117
Financing Receivable, Revolving	0
Loans held for investment	3,391	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	274
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,117
Financing Receivable, Revolving	0
Loans held for investment	3,391	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