Quarterly report pursuant to Section 13 or 15(d)

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Loan Purchases and Sales (Details)

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Loan Purchases and Sales (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Significant Purchases $ 36,867 $ 34,659 $ 341,985 $ 51,133  
Financing Receivable, Significant Sales 96,278 100,202 240,797 950,442  
Loans and leases receivable net premium 270,000   270,000   $ 262,000
Commercial and Industrial          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Significant Purchases 35,198 31,905 338,172 44,496  
Financing Receivable, Significant Sales 96,278 100,202 240,797 185,902  
Commercial Real Estate          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Significant Purchases 0 0 0 0  
Financing Receivable, Significant Sales 0 0 0 0  
Automobile          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Significant Purchases 0 0 0 0  
Financing Receivable, Significant Sales   1,000,000      
Financing Receivable, Significant Sales 0 0 0 764,540  
Home Equity          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Significant Purchases 0 0 0 0  
Financing Receivable, Significant Sales 0 0 0 0  
Residential Mortgage          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Significant Purchases 1,669 2,754 3,813 6,637  
Financing Receivable, Significant Sales 0 0 0 0  
Other Consumer          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Significant Purchases 0 0 0 0  
Financing Receivable, Significant Sales $ 0 $ 0 $ 0 $ 0