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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Non Traditional Mortgage Performance by Credit Score (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) Loan | Dec. 31, 2016 USD ($) Loan
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans and leases | $ 6,659,407 | $ 6,034,752
NTM Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans and leases | $ 806,933 | $ 885,148
Consumer | NTM Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 592 | 663
Total loans and leases | $ 806,933 | $ 885,148
Increase (decrease) in loans receivable | $ (78,200) |
Increase (decrease) in loans receivable, percentage | (8.80%) |
Consumer | NTM Loans | First lien |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 580 | 651
Total loans and leases | $ 803,355 | $ 881,589
Consumer | NTM Loans | Green Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans and leases | $ 85,800 | $ 91,000
Consumer | NTM Loans | Green Loans | First lien |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 101 | 107
Total loans and leases | $ 82,197 | $ 87,469
Count Change | Loan | 0 |
Increase (decrease) in loans receivable | $ 0 |
Increase (decrease) in loans receivable, percentage | 0.00% |
Consumer | NTM Loans | Green Loans | First lien | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 100.00% |
Consumer | NTM Loans | Green Loans | First lien | Greater than 800 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 12 | 15
Total loans and leases | $ 7,737 | $ 9,091
Count Change | Loan | (3) |
Increase (decrease) in loans receivable | $ (1,354) |
Increase (decrease) in loans receivable, percentage | (1.70%) |
Consumer | NTM Loans | Green Loans | First lien | Greater than 800 | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 9.40% | 11.10%
Consumer | NTM Loans | Green Loans | First lien | 700-799 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 57 | 50
Total loans and leases | $ 42,397 | $ 38,486
Count Change | Loan | 7 |
Increase (decrease) in loans receivable | $ 3,911 |
Increase (decrease) in loans receivable, percentage | 4.80% |
Consumer | NTM Loans | Green Loans | First lien | 700-799 | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 51.60% | 46.80%
Consumer | NTM Loans | Green Loans | First lien | 600-699 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 23 | 28
Total loans and leases | $ 23,467 | $ 27,420
Count Change | Loan | (5) |
Increase (decrease) in loans receivable | $ (3,953) |
Increase (decrease) in loans receivable, percentage | (4.80%) |
Consumer | NTM Loans | Green Loans | First lien | 600-699 | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 28.50% | 33.30%
Consumer | NTM Loans | Green Loans | First lien | Less than 600 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 5 | 1
Total loans and leases | $ 4,691 | $ 1,800
Count Change | Loan | 4 |
Increase (decrease) in loans receivable | $ 2,891 |
Increase (decrease) in loans receivable, percentage | 3.50% |
Consumer | NTM Loans | Green Loans | First lien | Less than 600 | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 5.70% | 2.20%
Consumer | NTM Loans | Green Loans | First lien | No FICO |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 4 | 7
Total loans and leases | $ 3,905 | $ 5,400
Count Change | Loan | (3) |
Increase (decrease) in loans receivable | $ (1,495) |
Increase (decrease) in loans receivable, percentage | (1.80%) |
Consumer | NTM Loans | Green Loans | First lien | No FICO | Loan Portfolio Concentration Risk | Non-Traditional Single Family Residential Mortgage Green Loans First Lien Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 4.80% | 6.60%

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