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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Non Traditional Mortgage Performance Loan to Value Ratio (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) Loan | Dec. 31, 2017 USD ($) Loan
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans and leases (1) | $ 7,700,873 | $ 6,659,407
NTM Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans and leases (1) | $ 826,731 | $ 806,933
Consumer | NTM Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 628 | 592
Total loans and leases (1) | $ 826,731 | $ 806,933
Consumer | NTM Loans | Green Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans and leases (1) | 70,100 | 85,800
Consumer | NTM Loans | Interest Only Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans and leases (1) | 753,100 | 717,500
Consumer | NTM Loans | Negative amortization |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans and leases (1) | $ 3,500 | $ 3,700
Consumer | NTM Loans | First lien |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 618 | 580
Total loans and leases (1) | $ 824,318 | $ 803,355
Consumer | NTM Loans | First lien | Loan Portfolio Concentration Risk | Nontraditional First Lien Mortgage Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 100.00% | 100.00%
Consumer | NTM Loans | First lien | Green Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 88 | 101
Total loans and leases (1) | $ 67,729 | $ 82,197
Consumer | NTM Loans | First lien | Green Loans | Loan Portfolio Concentration Risk | Green Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 100.00% | 100.00%
Consumer | NTM Loans | First lien | Interest Only Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 519 | 468
Total loans and leases (1) | $ 753,061 | $ 717,484
Consumer | NTM Loans | First lien | Interest Only Loans | Loan Portfolio Concentration Risk | Interest Only Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 100.00% | 100.00%
Consumer | NTM Loans | First lien | Negative amortization |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 11 | 11
Total loans and leases (1) | $ 3,528 | $ 3,674
Consumer | NTM Loans | First lien | Negative amortization | Loan Portfolio Concentration Risk | Negative Amortization Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 100.00% | 100.00%
Consumer | NTM Loans | First lien | Less than 61 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 392 | 311
Total loans and leases (1) | $ 551,285 | $ 461,877
Consumer | NTM Loans | First lien | Less than 61 | Loan Portfolio Concentration Risk | Nontraditional First Lien Mortgage Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 66.90% | 57.50%
Consumer | NTM Loans | First lien | Less than 61 | Green Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 69 | 60
Total loans and leases (1) | $ 51,827 | $ 51,241
Consumer | NTM Loans | First lien | Less than 61 | Green Loans | Loan Portfolio Concentration Risk | Green Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 76.50% | 62.30%
Consumer | NTM Loans | First lien | Less than 61 | Interest Only Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 312 | 242
Total loans and leases (1) | $ 495,930 | $ 407,810
Consumer | NTM Loans | First lien | Less than 61 | Interest Only Loans | Loan Portfolio Concentration Risk | Interest Only Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 65.90% | 56.80%
Consumer | NTM Loans | First lien | Less than 61 | Negative amortization |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 11 | 9
Total loans and leases (1) | $ 3,528 | $ 2,826
Consumer | NTM Loans | First lien | Less than 61 | Negative amortization | Loan Portfolio Concentration Risk | Negative Amortization Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 100.00% | 76.90%
Consumer | NTM Loans | First lien | 61-80 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 218 | 255
Total loans and leases (1) | $ 259,044 | $ 326,420
Consumer | NTM Loans | First lien | 61-80 | Loan Portfolio Concentration Risk | Nontraditional First Lien Mortgage Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 31.40% | 40.60%
Consumer | NTM Loans | First lien | 61-80 | Green Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 17 | 33
Total loans and leases (1) | $ 13,476 | $ 25,072
Consumer | NTM Loans | First lien | 61-80 | Green Loans | Loan Portfolio Concentration Risk | Green Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 19.90% | 30.50%
Consumer | NTM Loans | First lien | 61-80 | Interest Only Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 201 | 220
Total loans and leases (1) | $ 245,568 | $ 300,500
Consumer | NTM Loans | First lien | 61-80 | Interest Only Loans | Loan Portfolio Concentration Risk | Interest Only Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 32.60% | 41.90%
Consumer | NTM Loans | First lien | 61-80 | Negative amortization |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 0 | 2
Total loans and leases (1) | $ 0 | $ 848
Consumer | NTM Loans | First lien | 61-80 | Negative amortization | Loan Portfolio Concentration Risk | Negative Amortization Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 0.00% | 23.10%
Consumer | NTM Loans | First lien | 81-100 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 7 | 14
Total loans and leases (1) | $ 9,867 | $ 15,058
Consumer | NTM Loans | First lien | 81-100 | Loan Portfolio Concentration Risk | Nontraditional First Lien Mortgage Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 1.20% | 1.90%
Consumer | NTM Loans | First lien | 81-100 | Green Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 2 | 8
Total loans and leases (1) | $ 2,426 | $ 5,884
Consumer | NTM Loans | First lien | 81-100 | Green Loans | Loan Portfolio Concentration Risk | Green Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 3.60% | 7.20%
Consumer | NTM Loans | First lien | 81-100 | Interest Only Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 5 | 6
Total loans and leases (1) | $ 7,441 | $ 9,174
Consumer | NTM Loans | First lien | 81-100 | Interest Only Loans | Loan Portfolio Concentration Risk | Interest Only Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 1.00% | 1.30%
Consumer | NTM Loans | First lien | 81-100 | Negative amortization |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 0 | 0
Total loans and leases (1) | $ 0 | $ 0
Consumer | NTM Loans | First lien | 81-100 | Negative amortization | Loan Portfolio Concentration Risk | Negative Amortization Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 0.00% | 0.00%
Consumer | NTM Loans | First lien | Greater than 100 |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 1 | 0
Total loans and leases (1) | $ 4,122 | $ 0
Consumer | NTM Loans | First lien | Greater than 100 | Loan Portfolio Concentration Risk | Nontraditional First Lien Mortgage Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 0.50% | 0.00%
Consumer | NTM Loans | First lien | Greater than 100 | Green Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 0 | 0
Total loans and leases (1) | $ 0 | $ 0
Consumer | NTM Loans | First lien | Greater than 100 | Green Loans | Loan Portfolio Concentration Risk | Green Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 0.00% | 0.00%
Consumer | NTM Loans | First lien | Greater than 100 | Interest Only Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 1 | 0
Total loans and leases (1) | $ 4,122 | $ 0
Consumer | NTM Loans | First lien | Greater than 100 | Interest Only Loans | Loan Portfolio Concentration Risk | Interest Only Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 0.50% | 0.00%
Consumer | NTM Loans | First lien | Greater than 100 | Negative amortization |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Count | Loan | 0 | 0
Total loans and leases (1) | $ 0 | $ 0
Consumer | NTM Loans | First lien | Greater than 100 | Negative amortization | Loan Portfolio Concentration Risk | Negative Amortization Loans Portfolio |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage to total loans and leases | 0.00% | 0.00%

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
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