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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Non Traditional Mortgage Performance by Credit Score (Detail) $ in Thousands | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 USD ($) Loan | Dec. 31, 2016 USD ($) Loan | Sep. 30, 2016 USD ($)
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans | $ 6,226,897 | $ 6,034,752 | $ 6,568,791
Non-Traditional Mortgages (NTM) |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans | $ 793,946 | $ 885,148 |
Consumer | Non-Traditional Mortgages (NTM) |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 579 | 663 |
Loans | $ 793,946 | $ 885,148 |
Amount change | $ (91,200) |  |
Percent Change | (10.30%) |  |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 567 | 651 |
Loans | $ 790,388 | $ 881,589 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans | $ 85,800 | $ 91,000 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 101 | 107 |
Loans | $ 82,289 | $ 87,469 |
Count Change | Loan | 0 |  |
Amount change | $ 0 |  |
Percent Change | 0.00% |  |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 100.00% |  |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens | Greater than 800 |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 12 | 15 |
Loans | $ 8,410 | $ 9,139 |
Count Change | Loan | (3) |  |
Amount change | $ (729) |  |
Percent Change | (0.90%) |  |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens | Greater than 800 | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 10.20% | 11.10% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens | 700-799 |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 58 | 50 |
Loans | $ 43,168 | $ 38,567 |
Count Change | Loan | 8 |  |
Amount change | $ 4,601 |  |
Percent Change | 5.70% |  |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens | 700-799 | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 52.50% | 46.80% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens | 600-699 |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 24 | 28 |
Loans | $ 22,479 | $ 27,384 |
Count Change | Loan | (4) |  |
Amount change | $ (4,905) |  |
Percent Change | (6.00%) |  |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens | 600-699 | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 27.30% | 33.30% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens | Less than 600 |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 3 | 1 |
Loans | $ 4,329 | $ 1,800 |
Count Change | Loan | 2 |  |
Amount change | $ 2,529 |  |
Percent Change | 3.10% |  |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens | Less than 600 | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 5.30% | 2.20% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens | No FICO |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Count | Loan | 4 | 7 |
Loans | $ 3,903 | $ 5,399 |
Count Change | Loan | (3) |  |
Amount change | $ (1,496) |  |
Percent Change | (1.90%) |  |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans | Green Loans (HELOC) - first liens | No FICO | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Concentration risk percentage | 4.70% | 6.60% |

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