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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Non Traditional Mortgage Performance Loan to Value Ratio (Detail) $ in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 USD ($) Loan | Dec. 31, 2015 USD ($) Loan | Jun. 30, 2015 USD ($)
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | $ 6,236,115 | $ 5,184,394 | $ 4,473,095
Non-Traditional Mortgages (NTM) |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | $ 842,634 | $ 785,908 |
Consumer | Non-Traditional Mortgages (NTM) |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 699 | 689 |
Gross loans | $ 842,634 | $ 785,908 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 103,900 | 109,800 |
Consumer | Non-Traditional Mortgages (NTM) | Interest Only Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 727,500 | 664,500 |
Consumer | Non-Traditional Mortgages (NTM) | Negative amortization |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | $ 11,200 | $ 11,600 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 684 | 672 |
Gross loans | $ 838,336 | $ 781,091 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Loan Portfolio Concentration Risk | Nontraditional First Lien Mortgage Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 100.00% | 100.00% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Green Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 116 | 121 |
Gross loans | $ 99,620 | $ 105,131 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Green Loans | Loan Portfolio Concentration Risk | Green Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 100.00% | 100.00% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Interest Only Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 540 | 521 |
Gross loans | $ 727,527 | $ 664,358 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Interest Only Loans | Loan Portfolio Concentration Risk | Interest Only Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 100.00% | 100.00% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Negative amortization |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 28 | 30 |
Gross loans | $ 11,189 | $ 11,602 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Negative amortization | Loan Portfolio Concentration Risk | Negative Amortization Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 100.00% | 100.00% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Less than 61 |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 258 | 228 |
Gross loans | $ 345,385 | $ 264,612 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Less than 61 | Loan Portfolio Concentration Risk | Nontraditional First Lien Mortgage Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 41.20% | 33.90% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Less than 61 | Green Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 56 | 70 |
Gross loans | $ 40,480 | $ 51,221 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Less than 61 | Green Loans | Loan Portfolio Concentration Risk | Green Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 40.60% | 48.70% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Less than 61 | Interest Only Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 183 | 141 |
Gross loans | $ 299,757 | $ 208,120 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Less than 61 | Interest Only Loans | Loan Portfolio Concentration Risk | Interest Only Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 41.20% | 31.30% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Less than 61 | Negative amortization |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 19 | 17 |
Gross loans | $ 5,148 | $ 5,271 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Less than 61 | Negative amortization | Loan Portfolio Concentration Risk | Negative Amortization Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 46.00% | 45.40% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 61-80 |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 342 | 336 |
Gross loans | $ 450,086 | $ 456,843 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 61-80 | Loan Portfolio Concentration Risk | Nontraditional First Lien Mortgage Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 53.70% | 58.40% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 61-80 | Green Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 41 | 33 |
Gross loans | $ 45,248 | $ 42,075 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 61-80 | Green Loans | Loan Portfolio Concentration Risk | Green Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 45.40% | 40.00% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 61-80 | Interest Only Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 294 | 291 |
Gross loans | $ 399,589 | $ 408,662 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 61-80 | Interest Only Loans | Loan Portfolio Concentration Risk | Interest Only Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 55.00% | 61.60% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 61-80 | Negative amortization |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 7 | 12 |
Gross loans | $ 5,249 | $ 6,106 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 61-80 | Negative amortization | Loan Portfolio Concentration Risk | Negative Amortization Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 46.90% | 52.70% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 81-100 |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 47 | 50 |
Gross loans | $ 27,583 | $ 37,228 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 81-100 | Loan Portfolio Concentration Risk | Nontraditional First Lien Mortgage Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 3.30% | 4.80% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 81-100 | Green Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 15 | 12 |
Gross loans | $ 11,948 | $ 6,836 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 81-100 | Green Loans | Loan Portfolio Concentration Risk | Green Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 12.00% | 6.50% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 81-100 | Interest Only Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 30 | 37 |
Gross loans | $ 14,843 | $ 30,167 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 81-100 | Interest Only Loans | Loan Portfolio Concentration Risk | Interest Only Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 2.00% | 4.50% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 81-100 | Negative amortization |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 2 | 1 |
Gross loans | $ 792 | $ 225 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | 81-100 | Negative amortization | Loan Portfolio Concentration Risk | Negative Amortization Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 7.10% | 1.90% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Greater than 100 |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 37 | 58 |
Gross loans | $ 15,282 | $ 22,408 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Greater than 100 | Loan Portfolio Concentration Risk | Nontraditional First Lien Mortgage Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 1.80% | 2.90% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Greater than 100 | Green Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 4 | 6 |
Gross loans | $ 1,944 | $ 4,999 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Greater than 100 | Green Loans | Loan Portfolio Concentration Risk | Green Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 2.00% | 4.80% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Greater than 100 | Interest Only Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 33 | 52 |
Gross loans | $ 13,338 | $ 17,409 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Greater than 100 | Interest Only Loans | Loan Portfolio Concentration Risk | Interest Only Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 1.80% | 2.60% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Greater than 100 | Negative amortization |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 0 | 0 |
Gross loans | $ 0 | $ 0 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Greater than 100 | Negative amortization | Loan Portfolio Concentration Risk | Negative Amortization Loans Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 0.00% | 0.00% |

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