LOANS HELD FOR INVESTMENT - Corporation's Commercial and Construction Loans by Portfolio Classes and by Origination Year Based on the Internal Credit Risk Category (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment [Line Items]
Loans held for investment	$ 11,847,275	$ 9,002,205
Puerto Rico and Virgin Islands regions [Member]
Financing Receivable Recorded Investment [Line Items]
Loans held for investment	9,834,201	7,128,277
Florida region [Member]
Financing Receivable Recorded Investment [Line Items]
Loans held for investment	2,013,074	1,873,928
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	803,340
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	750,752
Financing Receivable, Originated Two Years before Latest Fiscal Year	350,467
Financing Receivable, Originated Three Years before Latest Fiscal Year	339,767
Financing Receivable, Originated Four Years before Latest Fiscal Year	123,294
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	370,090
Financing Receivable, Revolving	489,133
Loans held for investment	3,226,843	2,230,876
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	584,477
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	423,230
Financing Receivable, Originated Two Years before Latest Fiscal Year	240,397
Financing Receivable, Originated Three Years before Latest Fiscal Year	243,292
Financing Receivable, Originated Four Years before Latest Fiscal Year	111,813
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	314,273
Financing Receivable, Revolving	370,113
Loans held for investment	2,287,595	1,391,413
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	218,863
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	327,522
Financing Receivable, Originated Two Years before Latest Fiscal Year	110,070
Financing Receivable, Originated Three Years before Latest Fiscal Year	96,475
Financing Receivable, Originated Four Years before Latest Fiscal Year	11,481
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	55,817
Financing Receivable, Revolving	119,020
Loans held for investment	939,248	839,463
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	758,065
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	687,758
Financing Receivable, Originated Two Years before Latest Fiscal Year	335,040
Financing Receivable, Originated Three Years before Latest Fiscal Year	313,187
Financing Receivable, Originated Four Years before Latest Fiscal Year	121,608
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	318,461
Financing Receivable, Revolving	454,560
Loans held for investment	2,988,679	2,159,501
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	583,697
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	421,939
Financing Receivable, Originated Two Years before Latest Fiscal Year	237,053
Financing Receivable, Originated Three Years before Latest Fiscal Year	223,065
Financing Receivable, Originated Four Years before Latest Fiscal Year	110,127
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	264,373
Financing Receivable, Revolving	336,286
Loans held for investment	2,176,540	1,321,804
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	174,368
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	265,819
Financing Receivable, Originated Two Years before Latest Fiscal Year	97,987
Financing Receivable, Originated Three Years before Latest Fiscal Year	90,122
Financing Receivable, Originated Four Years before Latest Fiscal Year	11,481
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	54,088
Financing Receivable, Revolving	118,274
Loans held for investment	812,139	837,697
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	5,736
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	61,703
Financing Receivable, Originated Two Years before Latest Fiscal Year	12,705
Financing Receivable, Originated Three Years before Latest Fiscal Year	8,106
Financing Receivable, Originated Four Years before Latest Fiscal Year	83
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	29,537
Financing Receivable, Revolving	28,288
Loans held for investment	146,158	39,327
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	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	622
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,753
Financing Receivable, Originated Four Years before Latest Fiscal Year	83
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	29,537
Financing Receivable, Revolving	28,288
Loans held for investment	60,283	39,327
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	5,736
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	61,703
Financing Receivable, Originated Two Years before Latest Fiscal Year	12,083
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,353
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	85,875	0
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	39,539
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,291
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,722
Financing Receivable, Originated Three Years before Latest Fiscal Year	18,474
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,603
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	22,092
Financing Receivable, Revolving	6,285
Loans held for investment	92,006	29,031
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	780
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,291
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,722
Financing Receivable, Originated Three Years before Latest Fiscal Year	18,474
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,603
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	20,363
Financing Receivable, Revolving	5,539
Loans held for investment	50,772	27,265
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	38,759
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	1,729
Financing Receivable, Revolving	746
Loans held for investment	41,234	1,766
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	2,768
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	2,768
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	249
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	249
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	149,046
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	481,664
Financing Receivable, Originated Two Years before Latest Fiscal Year	355,260
Financing Receivable, Originated Three Years before Latest Fiscal Year	411,751
Financing Receivable, Originated Four Years before Latest Fiscal Year	222,096
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	574,744
Financing Receivable, Revolving	25,716
Loans held for investment	2,220,277	1,444,586
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	116,238
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	369,306
Financing Receivable, Originated Two Years before Latest Fiscal Year	305,498
Financing Receivable, Originated Three Years before Latest Fiscal Year	333,253
Financing Receivable, Originated Four Years before Latest Fiscal Year	181,817
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	528,156
Financing Receivable, Revolving	13
Loans held for investment	1,834,281	1,079,900
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Florida region [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	32,808
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	112,358
Financing Receivable, Originated Two Years before Latest Fiscal Year	49,762
Financing Receivable, Originated Three Years before Latest Fiscal Year	78,498
Financing Receivable, Originated Four Years before Latest Fiscal Year	40,279
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	46,588
Financing Receivable, Revolving	25,703
Loans held for investment	385,996	364,686
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	148,854
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	368,337
Financing Receivable, Originated Two Years before Latest Fiscal Year	294,865
Financing Receivable, Originated Three Years before Latest Fiscal Year	277,315
Financing Receivable, Originated Four Years before Latest Fiscal Year	201,895
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	497,335
Financing Receivable, Revolving	24,516
Loans held for investment	1,813,117	1,255,668
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	116,046
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	286,759
Financing Receivable, Originated Two Years before Latest Fiscal Year	251,885
Financing Receivable, Originated Three Years before Latest Fiscal Year	213,998
Financing Receivable, Originated Four Years before Latest Fiscal Year	172,380
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	468,307
Financing Receivable, Revolving	13
Loans held for investment	1,509,388	891,298
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	32,808
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	81,578
Financing Receivable, Originated Two Years before Latest Fiscal Year	42,980
Financing Receivable, Originated Three Years before Latest Fiscal Year	63,317
Financing Receivable, Originated Four Years before Latest Fiscal Year	29,515
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	29,028
Financing Receivable, Revolving	24,503
Loans held for investment	303,729	364,370
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	113,230
Financing Receivable, Originated Two Years before Latest Fiscal Year	60,395
Financing Receivable, Originated Three Years before Latest Fiscal Year	134,436
Financing Receivable, Originated Four Years before Latest Fiscal Year	19,528
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	28,596
Financing Receivable, Revolving	1,200
Loans held for investment	357,385	13,080
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	82,450
Financing Receivable, Originated Two Years before Latest Fiscal Year	53,613
Financing Receivable, Originated Three Years before Latest Fiscal Year	119,255
Financing Receivable, Originated Four Years before Latest Fiscal Year	8,764
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,362
Financing Receivable, Revolving	0
Loans held for investment	275,444	13,080
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	30,780
Financing Receivable, Originated Two Years before Latest Fiscal Year	6,782
Financing Receivable, Originated Three Years before Latest Fiscal Year	15,181
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,764
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	17,234
Financing Receivable, Revolving	1,200
Loans held for investment	81,941	0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member] \| Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	192
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	97
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	673
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	48,813
Financing Receivable, Revolving	0
Loans held for investment	49,775	175,838
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	192
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	97
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	673
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	48,487
Financing Receivable, Revolving	0
Loans held for investment	49,449	175,522
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	326
Financing Receivable, Revolving	0
Loans held for investment	326	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	70,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	37,289
Financing Receivable, Originated Two Years before Latest Fiscal Year	53,371
Financing Receivable, Originated Three Years before Latest Fiscal Year	15,326
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,192
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,746
Financing Receivable, Revolving	432
Loans held for investment	191,356	111,317
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	11,715
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	21,237
Financing Receivable, Originated Two Years before Latest Fiscal Year	6,790
Financing Receivable, Originated Three Years before Latest Fiscal Year	15,326
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,192
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,746
Financing Receivable, Revolving	0
Loans held for investment	70,006	48,246
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Florida region [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	58,285
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	16,052
Financing Receivable, Originated Two Years before Latest Fiscal Year	46,581
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	432
Loans held for investment	121,350	63,071
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	70,000
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	35,623
Financing Receivable, Originated Two Years before Latest Fiscal Year	48,395
Financing Receivable, Originated Three Years before Latest Fiscal Year	15,326
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,923
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,304
Financing Receivable, Revolving	432
Loans held for investment	175,003	98,751
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	11,715
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	19,571
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,814
Financing Receivable, Originated Three Years before Latest Fiscal Year	15,326
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,923
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,304
Financing Receivable, Revolving	0
Loans held for investment	53,653	35,680
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	58,285
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	16,052
Financing Receivable, Originated Two Years before Latest Fiscal Year	46,581
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	432
Loans held for investment	121,350	63,071
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	780
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	780	0
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	780
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	780	0
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	886
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,976
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	5,269
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,442
Financing Receivable, Revolving	0
Loans held for investment	15,573	12,566
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	886
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,976
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	5,269
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,442
Financing Receivable, Revolving	0
Loans held for investment	15,573	12,566
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