Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS - Cash Flow Hedges (Details)

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DERIVATIVE FINANCIAL INSTRUMENTS - Cash Flow Hedges (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Cash Flow Hedging        
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges        
Amount of gain or (loss) recognized in OCI on derivatives (effective portion) $ 1,293 $ (539) $ 10,542 $ 17,756
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) 248 138 892 261
Hedged Other long term debt | Interest expense subordinated notes and other long term debt        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges (21,047) 7,382 (80,834) (12,263)
Hedged Subordinated notes | Interest expense subordinated notes and other long term debt        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges (4) 7,362 (6,809) 4,131
Hedged Deposits | Interest expense deposits        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges 0 236 72 450
Loans | Interest and fee income loans and leases | Cash Flow Hedging        
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges        
Amount of gain or (loss) recognized in OCI on derivatives (effective portion) 1,293 (539) 10,542 17,756
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) 248 118 893 250
Investment securities | Interest and fee income investment securities | Cash Flow Hedging        
Gains and (losses) recognized in other comprehensive income (loss) (OCI) for derivatives designated as effective cash flow hedges        
Amount of gain or (loss) recognized in OCI on derivatives (effective portion) 0 0 0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) 0 20 (1) 11
Deposits | Interest expense deposits        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges 0 (245) (82) (458)
Subordinated notes | Interest expense subordinated notes and other long term debt        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges 4 (7,362) 6,809 (4,131)
Other long-term debt | Interest expense subordinated notes and other long term debt        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges        
Increase or (decrease) to interest expense for derivatives designated as fair value hedges $ 22,017 $ (8,129) $ 83,049 $ 11,896