LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Composition of Nonaccrual Loans and Leases (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	$ 35,223	$ 45,129
Non-Traditional Mortgages (NTM)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	11,390	14,703
Traditional Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	23,833	30,426
Commercial | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	4,577	4,383
Commercial | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	0	1,552
Commercial | Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	0	642
Commercial | SBA
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	334	422
Commercial | Lease financing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	2,295	598
Commercial | Non-Traditional Mortgages (NTM) | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	0	0
Commercial | Non-Traditional Mortgages (NTM) | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	0	0
Commercial | Non-Traditional Mortgages (NTM) | Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	0	0
Commercial | Non-Traditional Mortgages (NTM) | SBA
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	0	0
Commercial | Non-Traditional Mortgages (NTM) | Lease financing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	0	0
Commercial | Traditional Loans | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	4,577	4,383
Commercial | Traditional Loans | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	0	1,552
Commercial | Traditional Loans | Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	0	642
Commercial | Traditional Loans | SBA
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	334	422
Commercial | Traditional Loans | Lease financing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	2,295	598
Consumer | Single family residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	18,095	27,230
Consumer | Consumer Home Equity Loan | Green Loans (HELOC) - first liens
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	8,689	10,088
Consumer | Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	1,233	214
Consumer | Non-Traditional Mortgages (NTM) | Single family residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	2,701	4,615
Consumer | Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	8,689	10,088
Consumer | Non-Traditional Mortgages (NTM) | Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	0	0
Consumer | Traditional Loans | Single family residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	15,394	22,615
Consumer | Traditional Loans | Consumer Home Equity Loan | Green Loans (HELOC) - first liens
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	0	0
Consumer | Traditional Loans | Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans and leases, Total	$ 1,233	$ 214