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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Risk Categories for Loans and Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 5,463,068	$ 5,184,394	$ 3,933,715
Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,691,283	4,376,684
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	27,190	36,530
Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	72,731	72,089
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	671,864	699,091
Purchased Credit Impaired
Financing Receivable, Recorded Investment [Line Items]
Gross loans	683,976	712,731	241,798
Purchased Credit Impaired | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	5,305	6,663
Purchased Credit Impaired | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	518	523
Purchased Credit Impaired | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	6,289	6,454
Purchased Credit Impaired | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	671,864	699,091
Non-Traditional Mortgages (NTM)
Financing Receivable, Recorded Investment [Line Items]
Gross loans	799,801	785,908
Traditional Loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,979,291	3,685,755
Traditional Loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,914,828	3,616,554
Traditional Loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	14,285	21,947
Traditional Loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	50,178	47,254
Traditional Loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	68,241	55,289
Consumer | Single family residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Gross loans	2,180,315	2,150,453
Consumer | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	104,787	109,681
Consumer | Purchased Credit Impaired | Single family residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Gross loans	671,999	699,230
Consumer | Purchased Credit Impaired | Single family residential mortgage | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Purchased Credit Impaired | Single family residential mortgage | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Purchased Credit Impaired | Single family residential mortgage | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	135	139
Consumer | Purchased Credit Impaired | Single family residential mortgage | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Purchased Credit Impaired | Single family residential mortgage | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	671,864	699,091
Consumer | Purchased Credit Impaired | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM)
Financing Receivable, Recorded Investment [Line Items]
Gross loans	799,801	785,908
Consumer | Non-Traditional Mortgages (NTM) | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	771,150	753,467
Consumer | Non-Traditional Mortgages (NTM) | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	12,387	14,060
Consumer | Non-Traditional Mortgages (NTM) | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	16,264	18,381
Consumer | Non-Traditional Mortgages (NTM) | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	795,320	781,091
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - second liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,481	4,817
Consumer | Non-Traditional Mortgages (NTM) | Single family residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Gross loans	693,190	675,960
Consumer | Non-Traditional Mortgages (NTM) | Single family residential mortgage | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	678,755	660,683
Consumer | Non-Traditional Mortgages (NTM) | Single family residential mortgage | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	10,986	11,731
Consumer | Non-Traditional Mortgages (NTM) | Single family residential mortgage | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,449	3,546
Consumer | Non-Traditional Mortgages (NTM) | Single family residential mortgage | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Single family residential mortgage | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	102,130	105,131
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	87,914	87,967
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,401	2,329
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	12,815	14,835
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,368	4,704
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,368	4,704
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	113	113
Consumer | Non-Traditional Mortgages (NTM) | Other consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	113	113
Consumer | Non-Traditional Mortgages (NTM) | Other consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Other consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Other consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Non-Traditional Mortgages (NTM) | Other consumer | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Traditional Loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans		3,685,755
Consumer | Traditional Loans | Single family residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Gross loans	815,126	775,263
Consumer | Traditional Loans | Single family residential mortgage | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	779,145	738,196
Consumer | Traditional Loans | Single family residential mortgage | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	9,473	12,301
Consumer | Traditional Loans | Single family residential mortgage | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	26,508	24,766
Consumer | Traditional Loans | Single family residential mortgage | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Traditional Loans | Single family residential mortgage | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Traditional Loans | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	104,674	109,568
Consumer | Traditional Loans | Other consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	104,365	109,206
Consumer | Traditional Loans | Other consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	139	148
Consumer | Traditional Loans | Other consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	170	214
Consumer | Traditional Loans | Other consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Consumer | Traditional Loans | Other consumer | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	983,961	876,999	489,229
Commercial | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	713,693	727,707	975,734
Commercial | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,021,097	904,300	940,053
Commercial | SBA
Financing Receivable, Recorded Investment [Line Items]
Gross loans	71,640	57,706	48,254
Commercial | Construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	68,241	55,289	38,081
Commercial | Lease financing
Financing Receivable, Recorded Investment [Line Items]
Gross loans	212,836	192,424	102,012
Commercial | Purchased Credit Impaired | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	819	853	1,079
Commercial | Purchased Credit Impaired | Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	41	54
Commercial | Purchased Credit Impaired | Commercial and industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Purchased Credit Impaired | Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	778	799
Commercial | Purchased Credit Impaired | Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Purchased Credit Impaired | Commercial and industrial | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Purchased Credit Impaired | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	8,218	9,599	10,432
Commercial | Purchased Credit Impaired | Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,287	5,621
Commercial | Purchased Credit Impaired | Commercial real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	518	523
Commercial | Purchased Credit Impaired | Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,413	3,455
Commercial | Purchased Credit Impaired | Commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Purchased Credit Impaired | Commercial real estate | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Purchased Credit Impaired | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0	0
Commercial | Purchased Credit Impaired | SBA
Financing Receivable, Recorded Investment [Line Items]
Gross loans	2,940	3,049	3,136
Commercial | Purchased Credit Impaired | SBA | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	977	988
Commercial | Purchased Credit Impaired | SBA | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Purchased Credit Impaired | SBA | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,963	2,061
Commercial | Purchased Credit Impaired | SBA | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Purchased Credit Impaired | SBA | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Purchased Credit Impaired | Construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0	0
Commercial | Purchased Credit Impaired | Lease financing
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0	$ 0
Commercial | Traditional Loans | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	983,142	876,146
Commercial | Traditional Loans | Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	970,765	860,993
Commercial | Traditional Loans | Commercial and industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	875	3,175
Commercial | Traditional Loans | Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	11,502	11,978
Commercial | Traditional Loans | Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | Commercial and industrial | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	705,475	718,108
Commercial | Traditional Loans | Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	695,719	707,238
Commercial | Traditional Loans | Commercial real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	2,175	4,788
Commercial | Traditional Loans | Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	7,581	6,082
Commercial | Traditional Loans | Commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | Commercial real estate | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,021,097	904,300
Commercial | Traditional Loans | Multi-family | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,018,418	901,578
Commercial | Traditional Loans | Multi-family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	387	403
Commercial | Traditional Loans | Multi-family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	2,292	2,319
Commercial | Traditional Loans | Multi-family | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | Multi-family | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | SBA
Financing Receivable, Recorded Investment [Line Items]
Gross loans	68,700	54,657
Commercial | Traditional Loans | SBA | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	67,172	53,078
Commercial | Traditional Loans | SBA | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,116	1,132
Commercial | Traditional Loans | SBA | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	412	447
Commercial | Traditional Loans | SBA | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | SBA | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | Construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	68,241	55,289
Commercial | Traditional Loans | Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	68,241	55,289
Commercial | Traditional Loans | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | Construction | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | Construction | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | Lease financing
Financing Receivable, Recorded Investment [Line Items]
Gross loans	212,836	192,424
Commercial | Traditional Loans | Lease financing | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	211,003	190,976
Commercial | Traditional Loans | Lease financing | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	120	0
Commercial | Traditional Loans | Lease financing | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,713	1,448
Commercial | Traditional Loans | Lease financing | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial | Traditional Loans | Lease financing | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 0	$ 0

X

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+ References

No definition available.

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

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