Annual report pursuant to Section 13 and 15(d)

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

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LOANS AND LEASES AND ALLOWANCE FOR CREDIT LOSSES - Nonaccrual Loans by Loan Class (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans $ 423,003 $ 371,581
Commercial | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 234,184 175,195
Commercial | Commercial Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 20,508 28,984
Consumer | Automobile    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 5,766 6,564
Consumer | Home Equity    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 71,798 66,278
Consumer | Residential Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 90,502 94,560
Consumer | RV and marine finance    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans 245 0
Consumer | Other Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total nonaccrual loans $ 0 $ 0