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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Risk Categories for Loans and Leases (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 4,473,095	$ 3,949,122	$ 2,602,213
Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,072,974	3,581,683
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	50,422	33,612
Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	97,562	103,016
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	298	0
Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	251,839	230,811
Single family residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,723,043	1,048,485
Consumer Home Equity Loan | Green Loans (HELOC) - first liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	117,881	123,177
Consumer Home Equity Loan | Green Loans (HELOC) - second liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,773	4,979
Other consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	131,909	161,939
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	771,477	490,900	368,540
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	807,146	999,857	535,744
Multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	696,768	955,683	234,179
SBA
Financing Receivable, Recorded Investment [Line Items]
Gross loans	56,887	36,155	28,684
Construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	32,022	42,198	30,761
Lease financing
Financing Receivable, Recorded Investment [Line Items]
Gross loans	131,189	85,749	$ 57,754
Purchased Credit Impaired
Financing Receivable, Recorded Investment [Line Items]
Gross loans	266,372	246,897
Purchased Credit Impaired | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	6,089	7,457
Purchased Credit Impaired | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,251	1,336
Purchased Credit Impaired | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	7,193	7,293
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	251,839	230,811
Purchased Credit Impaired | Single family residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Gross loans	251,982	231,079
Purchased Credit Impaired | Single family residential mortgage | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Single family residential mortgage | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Single family residential mortgage | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	143	268
Purchased Credit Impaired | Single family residential mortgage | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Single family residential mortgage | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	251,839	230,811
Purchased Credit Impaired | Consumer Home Equity Loan | Green Loans (HELOC) - first liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Consumer Home Equity Loan | Green Loans (HELOC) - second liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	365	1,134
Purchased Credit Impaired | Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	80	104
Purchased Credit Impaired | Commercial and industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	285	1,030
Purchased Credit Impaired | Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Commercial and industrial | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	11,004	11,527
Purchased Credit Impaired | Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	5,662	6,676
Purchased Credit Impaired | Commercial real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	968	985
Purchased Credit Impaired | Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,374	3,866
Purchased Credit Impaired | Commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Commercial real estate | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | SBA
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,021	3,157
Purchased Credit Impaired | SBA | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	347	677
Purchased Credit Impaired | SBA | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	283	351
Purchased Credit Impaired | SBA | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	2,391	2,129
Purchased Credit Impaired | SBA | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | SBA | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Purchased Credit Impaired | Lease financing
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM)
Financing Receivable, Recorded Investment [Line Items]
Gross loans	720,321	350,575
Non-Traditional Mortgages (NTM) | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	685,399	329,270
Non-Traditional Mortgages (NTM) | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	12,495	678
Non-Traditional Mortgages (NTM) | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	22,129	20,627
Non-Traditional Mortgages (NTM) | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	298	0
Non-Traditional Mortgages (NTM) | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	715,435	345,483
Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - second liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,886	5,092
Non-Traditional Mortgages (NTM) | Single family residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Gross loans	597,554	222,306
Non-Traditional Mortgages (NTM) | Single family residential mortgage | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	581,334	219,747
Non-Traditional Mortgages (NTM) | Single family residential mortgage | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	12,097	279
Non-Traditional Mortgages (NTM) | Single family residential mortgage | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,123	2,280
Non-Traditional Mortgages (NTM) | Single family residential mortgage | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | Single family residential mortgage | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	117,881	123,177
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	99,179	104,640
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	398	399
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	18,006	18,138
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	298	0
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
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,773	4,979
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,773	4,770
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
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	209
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
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
Non-Traditional Mortgages (NTM) | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	113	113
Non-Traditional Mortgages (NTM) | Other consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	113	113
Non-Traditional Mortgages (NTM) | Other consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | Other consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | Other consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | Other consumer | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | SBA
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | Construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Non-Traditional Mortgages (NTM) | Lease financing
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,486,402	3,351,650
Traditional Loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,381,486	3,244,956
Traditional Loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	36,676	31,598
Traditional Loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	68,240	75,096
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 | Single family residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Gross loans	873,507	595,100
Traditional Loans | Single family residential mortgage | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	833,492	569,871
Traditional Loans | Single family residential mortgage | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	18,593	10,395
Traditional Loans | Single family residential mortgage | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	21,422	14,834
Traditional Loans | Single family residential mortgage | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Single family residential mortgage | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Consumer Home Equity Loan | Green Loans (HELOC) - first liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Consumer Home Equity Loan | Green Loans (HELOC) - second liens
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Gross loans	131,796	161,826
Traditional Loans | Other consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	131,696	161,701
Traditional Loans | Other consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	61	85
Traditional Loans | Other consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	39	40
Traditional Loans | Other consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Other consumer | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Gross loans	771,112	489,766
Traditional Loans | Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	746,236	477,319
Traditional Loans | Commercial and industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,065	117
Traditional Loans | Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	21,811	12,330
Traditional Loans | Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Commercial and industrial | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Gross loans	796,142	988,330
Traditional Loans | Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	774,529	943,645
Traditional Loans | Commercial real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	10,041	14,281
Traditional Loans | Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	11,572	30,404
Traditional Loans | Commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Commercial real estate | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	696,768	955,683
Traditional Loans | Multi-family | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	680,912	932,438
Traditional Loans | Multi-family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,778	6,684
Traditional Loans | Multi-family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	11,078	16,561
Traditional Loans | Multi-family | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Multi-family | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | SBA
Financing Receivable, Recorded Investment [Line Items]
Gross loans	53,866	32,998
Traditional Loans | SBA | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	53,107	32,171
Traditional Loans | SBA | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | SBA | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	759	827
Traditional Loans | SBA | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | SBA | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Construction
Financing Receivable, Recorded Investment [Line Items]
Gross loans	32,022	42,198
Traditional Loans | Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	32,022	42,198
Traditional Loans | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Construction | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Construction | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Lease financing
Financing Receivable, Recorded Investment [Line Items]
Gross loans	131,189	85,749
Traditional Loans | Lease financing | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	129,492	85,613
Traditional Loans | Lease financing | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	138	36
Traditional Loans | Lease financing | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,559	100
Traditional Loans | Lease financing | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Traditional Loans | Lease financing | Not-Rated
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 0	$ 0

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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=28367877&loc=d3e4428-111522

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