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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Risk Categories for Loans and Leases (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | $ 5,184,394 | $ 3,949,122
Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 4,376,684 | 3,581,683
Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 36,530 | 33,612
Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 72,089 | 103,016
Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Not-Rated |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 699,091 | 230,811
Purchased Credit Impaired |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 712,731 | 246,897
Purchased Credit Impaired | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 6,663 | 7,457
Purchased Credit Impaired | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 523 | 1,336
Purchased Credit Impaired | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 6,454 | 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 | 699,091 | 230,811
Non-Traditional Mortgages |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 785,908 | 350,575
Traditional Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 3,685,755 | 3,351,650
Traditional Loans | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 3,616,554 | 3,244,956
Traditional Loans | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 21,947 | 31,598
Traditional Loans | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 47,254 | 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 | Construction |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 55,289 | 42,198
Consumer | Single family residential mortgage |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 2,150,453 | 1,048,485
Consumer | Other consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 109,681 | 161,939
Consumer | Purchased Credit Impaired | Single family residential mortgage |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 699,230 | 231,079
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 | 139 | 268
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 | 699,091 | 230,811
Consumer | Purchased Credit Impaired | Other consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Purchased Credit Impaired | Other consumer | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Purchased Credit Impaired | Other consumer | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Purchased Credit Impaired | Other consumer | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Purchased Credit Impaired | Other consumer | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Purchased Credit Impaired | Other consumer | Not-Rated |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Non-Traditional Mortgages |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 785,908 | 350,575
Consumer | Non-Traditional Mortgages | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 753,467 | 329,270
Consumer | Non-Traditional Mortgages | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 14,060 | 678
Consumer | Non-Traditional Mortgages | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 18,381 | 20,627
Consumer | Non-Traditional Mortgages | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Non-Traditional Mortgages | Not-Rated |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Non-Traditional Mortgages | Green Loans (HELOC) - first liens |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 781,091 | 345,483
Consumer | Non-Traditional Mortgages | Green Loans (HELOC) - second liens |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 4,817 | 5,092
Consumer | Non-Traditional Mortgages | Single family residential mortgage |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 675,960 | 222,306
Consumer | Non-Traditional Mortgages | Single family residential mortgage | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 660,683 | 219,747
Consumer | Non-Traditional Mortgages | Single family residential mortgage | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 11,731 | 279
Consumer | Non-Traditional Mortgages | Single family residential mortgage | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 3,546 | 2,280
Consumer | Non-Traditional Mortgages | Single family residential mortgage | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Non-Traditional Mortgages | Single family residential mortgage | Not-Rated |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Non-Traditional Mortgages | Consumer Home Equity Loan | Green Loans (HELOC) - first liens |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 105,131 | 123,177
Consumer | Non-Traditional Mortgages | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 87,967 | 104,640
Consumer | Non-Traditional Mortgages | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 2,329 | 399
Consumer | Non-Traditional Mortgages | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 14,835 | 18,138
Consumer | Non-Traditional Mortgages | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Non-Traditional Mortgages | 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 | Consumer Home Equity Loan | Green Loans (HELOC) - second liens |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 4,704 | 4,979
Consumer | Non-Traditional Mortgages | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 4,704 | 4,770
Consumer | Non-Traditional Mortgages | 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 | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 209
Consumer | Non-Traditional Mortgages | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Non-Traditional Mortgages | 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 | Other consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 113 | 113
Consumer | Non-Traditional Mortgages | Other consumer | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 113 | 113
Consumer | Non-Traditional Mortgages | Other consumer | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Non-Traditional Mortgages | Other consumer | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Non-Traditional Mortgages | Other consumer | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Consumer | Non-Traditional Mortgages | 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 |  | 3,351,650
Consumer | Traditional Loans | Single family residential mortgage |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 775,263 | 595,100
Consumer | Traditional Loans | Single family residential mortgage | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 738,196 | 569,871
Consumer | Traditional Loans | Single family residential mortgage | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 12,301 | 10,395
Consumer | Traditional Loans | Single family residential mortgage | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 24,766 | 14,834
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 | 109,568 | 161,826
Consumer | Traditional Loans | Other consumer | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 109,206 | 161,701
Consumer | Traditional Loans | Other consumer | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 148 | 85
Consumer | Traditional Loans | Other consumer | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 214 | 40
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 | 876,999 | 490,900
Commercial | Commercial real estate |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 727,707 | 999,857
Commercial | Multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 904,300 | 955,683
Commercial | SBA |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 57,706 | 36,155
Commercial | Construction |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 55,289 | 42,198
Commercial | Lease financing |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 192,424 | 85,749
Commercial | Purchased Credit Impaired | Commercial and industrial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 853 | 1,134
Commercial | Purchased Credit Impaired | Commercial and industrial | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 54 | 104
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 | 799 | 1,030
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 | 9,599 | 11,527
Commercial | Purchased Credit Impaired | Commercial real estate | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 5,621 | 6,676
Commercial | Purchased Credit Impaired | Commercial real estate | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 523 | 985
Commercial | Purchased Credit Impaired | Commercial real estate | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 3,455 | 3,866
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
Commercial | Purchased Credit Impaired | SBA |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 3,049 | 3,157
Commercial | Purchased Credit Impaired | SBA | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 988 | 677
Commercial | Purchased Credit Impaired | SBA | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 351
Commercial | Purchased Credit Impaired | SBA | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 2,061 | 2,129
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
Commercial | Purchased Credit Impaired | Lease financing |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 0
Commercial | Traditional Loans | Commercial and industrial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 876,146 | 489,766
Commercial | Traditional Loans | Commercial and industrial | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 860,993 | 477,319
Commercial | Traditional Loans | Commercial and industrial | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 3,175 | 117
Commercial | Traditional Loans | Commercial and industrial | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 11,978 | 12,330
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 | 718,108 | 988,330
Commercial | Traditional Loans | Commercial real estate | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 707,238 | 943,645
Commercial | Traditional Loans | Commercial real estate | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 4,788 | 14,281
Commercial | Traditional Loans | Commercial real estate | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 6,082 | 30,404
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 | 904,300 | 955,683
Commercial | Traditional Loans | Multi-family | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 901,578 | 932,438
Commercial | Traditional Loans | Multi-family | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 403 | 6,684
Commercial | Traditional Loans | Multi-family | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 2,319 | 16,561
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 | 54,657 | 32,998
Commercial | Traditional Loans | SBA | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 53,078 | 32,171
Commercial | Traditional Loans | SBA | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 1,132 | 0
Commercial | Traditional Loans | SBA | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 447 | 827
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 | 55,289 | 42,198
Commercial | Traditional Loans | Construction | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 55,289 | 42,198
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 | 192,424 | 85,749
Commercial | Traditional Loans | Lease financing | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 190,976 | 85,613
Commercial | Traditional Loans | Lease financing | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 0 | 36
Commercial | Traditional Loans | Lease financing | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Gross loans | 1,448 | 100
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

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