Quarterly report pursuant to Section 13 or 15(d)

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Nonaccrual Loans by Loan Class (Details)

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Nonaccrual Loans by Loan Class (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans $ 498,734 $ 371,581
Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 307,824 175,195
Commercial and Industrial | Owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 28,202 35,481
Commercial and Industrial | Other commercial and industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 279,622 139,714
Commercial Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 30,801 28,984
Commercial Real Estate | Retail properties    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 4,087 7,217
Commercial Real Estate | Multi-family    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 4,501 5,819
Commercial Real Estate | Office    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 17,495 10,495
Commercial Real Estate | Industrial and warehouse    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 1,794 2,202
Commercial Real Estate | Other commercial real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 2,924 3,251
Automobile    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 7,598 6,564
Home Equity    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 62,208 66,278
Home Equity | Secured by first-lien    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 35,101 35,389
Home Equity | Secured by junior-lien    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 27,107 30,889
Residential Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 90,303 94,560
Other Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans $ 0 $ 0