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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Aging of Recorded Investment in Past Due Loans and Leases (Detail) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014 | Jun. 30, 2014
--- | --- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | $ 50,744 | $ 46,421 |
60 - 89 Days Past Due | 13,427 | 11,914 |
Greater than 89 Days Past due | 31,503 | 22,596 |
Total Past Due | 95,674 | 80,931 |
Current | 4,377,421 | 3,868,191 |
Total ending loan balances | 4,473,095 | 3,949,122 | $ 2,602,213
Single family residential mortgage |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 1,723,043 | 1,048,485 |
Consumer Home Equity Loan | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 117,881 | 123,177 |
Consumer Home Equity Loan | Green Loans (HELOC) - second liens |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 4,773 | 4,979 |
Other consumer |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 131,909 | 161,939 |
Commercial and industrial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 771,477 | 490,900 | 368,540
Commercial real estate |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 807,146 | 999,857 | 535,744
Multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 696,768 | 955,683 | 234,179
SBA |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 56,887 | 36,155 | 28,684
Construction |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 32,022 | 42,198 | 30,761
Lease financing |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 131,189 | 85,749 | $ 57,754
Purchased Credit Impaired |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 13,629 | 14,140 |
60 - 89 Days Past Due | 3,722 | 3,501 |
Greater than 89 Days Past due | 8,648 | 5,761 |
Total Past Due | 25,999 | 23,402 |
Current | 240,373 | 223,495 |
Total ending loan balances | 266,372 | 246,897 |
Purchased Credit Impaired | Single family residential mortgage |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 13,257 | 13,262 |
60 - 89 Days Past Due | 3,531 | 3,501 |
Greater than 89 Days Past due | 7,154 | 4,510 |
Total Past Due | 23,942 | 21,273 |
Current | 228,040 | 209,806 |
Total ending loan balances | 251,982 | 231,079 |
Purchased Credit Impaired | Consumer Home Equity Loan | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Purchased Credit Impaired | Consumer Home Equity Loan | Green Loans (HELOC) - second liens |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Purchased Credit Impaired | Other consumer |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Purchased Credit Impaired | Commercial and industrial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 0 | 0 |
60 - 89 Days Past Due | 0 | 0 |
Greater than 89 Days Past due | 184 | 0 |
Total Past Due | 184 | 0 |
Current | 181 | 1,134 |
Total ending loan balances | 365 | 1,134 |
Purchased Credit Impaired | Commercial real estate |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 0 | 0 |
60 - 89 Days Past Due | 0 | 0 |
Greater than 89 Days Past due | 691 | 951 |
Total Past Due | 691 | 951 |
Current | 10,313 | 10,576 |
Total ending loan balances | 11,004 | 11,527 |
Purchased Credit Impaired | Multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Purchased Credit Impaired | SBA |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 372 | 878 |
60 - 89 Days Past Due | 191 | 0 |
Greater than 89 Days Past due | 619 | 300 |
Total Past Due | 1,182 | 1,178 |
Current | 1,839 | 1,979 |
Total ending loan balances | 3,021 | 3,157 |
Purchased Credit Impaired | Construction |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Purchased Credit Impaired | Lease financing |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Non-Traditional Mortgages (NTM) |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 13,709 | 10,562 |
60 - 89 Days Past Due | 2,392 | 165 |
Greater than 89 Days Past due | 4,014 | 2,695 |
Total Past Due | 20,115 | 13,422 |
Current | 700,206 | 337,153 |
Total ending loan balances | 720,321 | 350,575 |
Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 715,435 | 345,483 |
Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - second liens |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 4,886 | 5,092 |
Non-Traditional Mortgages (NTM) | Single family residential mortgage |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 5,637 | 1,415 |
60 - 89 Days Past Due | 170 | 165 |
Greater than 89 Days Past due | 4,014 | 2,049 |
Total Past Due | 9,821 | 3,629 |
Current | 587,733 | 218,677 |
Total ending loan balances | 597,554 | 222,306 |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 8,072 | 8,853 |
60 - 89 Days Past Due | 2,222 | 0 |
Greater than 89 Days Past due | 0 | 437 |
Total Past Due | 10,294 | 9,290 |
Current | 107,587 | 113,887 |
Total ending loan balances | 117,881 | 123,177 |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 0 | 294 |
60 - 89 Days Past Due | 0 | 0 |
Greater than 89 Days Past due | 0 | 209 |
Total Past Due | 0 | 503 |
Current | 4,773 | 4,476 |
Total ending loan balances | 4,773 | 4,979 |
Non-Traditional Mortgages (NTM) | Other consumer |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 0 | 0 |
60 - 89 Days Past Due | 0 | 0 |
Greater than 89 Days Past due | 0 | 0 |
Total Past Due | 0 | 0 |
Current | 113 | 113 |
Total ending loan balances | 113 | 113 |
Non-Traditional Mortgages (NTM) | Commercial and industrial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Non-Traditional Mortgages (NTM) | Commercial real estate |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Non-Traditional Mortgages (NTM) | Multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Non-Traditional Mortgages (NTM) | SBA |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Non-Traditional Mortgages (NTM) | Construction |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Non-Traditional Mortgages (NTM) | Lease financing |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Traditional Loans |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 23,406 | 21,719 |
60 - 89 Days Past Due | 7,313 | 8,248 |
Greater than 89 Days Past due | 18,841 | 14,140 |
Total Past Due | 49,560 | 44,107 |
Current | 3,436,842 | 3,307,543 |
Total ending loan balances | 3,486,402 | 3,351,650 |
Traditional Loans | Single family residential mortgage |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 18,509 | 17,185 |
60 - 89 Days Past Due | 6,698 | 7,878 |
Greater than 89 Days Past due | 17,491 | 10,411 |
Total Past Due | 42,698 | 35,474 |
Current | 830,809 | 559,626 |
Total ending loan balances | 873,507 | 595,100 |
Traditional Loans | Consumer Home Equity Loan | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Traditional Loans | Consumer Home Equity Loan | Green Loans (HELOC) - second liens |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Total ending loan balances | 0 | 0 |
Traditional Loans | Other consumer |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 132 | 9 |
60 - 89 Days Past Due | 0 | 89 |
Greater than 89 Days Past due | 27 | 5 |
Total Past Due | 159 | 103 |
Current | 131,637 | 161,723 |
Total ending loan balances | 131,796 | 161,826 |
Traditional Loans | Commercial and industrial |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 1,053 | 79 |
60 - 89 Days Past Due | 14 | 37 |
Greater than 89 Days Past due | 169 | 3,370 |
Total Past Due | 1,236 | 3,486 |
Current | 769,876 | 486,280 |
Total ending loan balances | 771,112 | 489,766 |
Traditional Loans | Commercial real estate |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 2,900 | 2,237 |
60 - 89 Days Past Due | 358 | 0 |
Greater than 89 Days Past due | 0 | 0 |
Total Past Due | 3,258 | 2,237 |
Current | 792,884 | 986,093 |
Total ending loan balances | 796,142 | 988,330 |
Traditional Loans | Multi-family |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 335 | 1,072 |
60 - 89 Days Past Due | 0 | 208 |
Greater than 89 Days Past due | 0 | 0 |
Total Past Due | 335 | 1,280 |
Current | 696,433 | 954,403 |
Total ending loan balances | 696,768 | 955,683 |
Traditional Loans | SBA |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 30 | 82 |
60 - 89 Days Past Due | 0 | 0 |
Greater than 89 Days Past due | 230 | 254 |
Total Past Due | 260 | 336 |
Current | 53,606 | 32,662 |
Total ending loan balances | 53,866 | 32,998 |
Traditional Loans | Construction |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 0 | 0 |
60 - 89 Days Past Due | 0 | 0 |
Greater than 89 Days Past due | 0 | 0 |
Total Past Due | 0 | 0 |
Current | 32,022 | 42,198 |
Total ending loan balances | 32,022 | 42,198 |
Traditional Loans | Lease financing |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
30 - 59 Days Past Due | 447 | 1,055 |
60 - 89 Days Past Due | 243 | 36 |
Greater than 89 Days Past due | 924 | 100 |
Total Past Due | 1,614 | 1,191 |
Current | 129,575 | 84,558 |
Total ending loan balances | $ 131,189 | $ 85,749 |

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- Definition Financing receivables that are less than 60 days past due but more than 29 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953401-111524 + Details
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- Definition Financing receivables that are less than 90 days past due but more than 59 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953401-111524 + Details
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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=28367877&loc=d3e4428-111522 + Details
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