Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments (Cash flow hedges) (Details 2)

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Derivative Financial Instruments (Cash flow hedges) (Details 2) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Cash flow hedging [Member]
        
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) $ 17,337 $ 14,027 $ (46,526) $ 3,329
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) 3,085 13,298 11,569 (13,428)
Hedged Other long term debt [Member] | Interest expense subordinated notes and other long term debt [Member]
        
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 (316) (205) 1,255 (489)
Hedged Subordinated notes [Member] | Interest expense subordinated notes and other long term debt [Member]
        
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 2,358 (2,448) 34,378 (8,207)
Hedged Deposits [Member] | Interest expense deposits [Member]
        
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 340 428 3,645 840
FHLB Advances [Member] | Interest expense other borrowings [Member] | Cash flow hedging [Member]
        
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 0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) 0 0 0 0
Loan [Member] | Interest and fee income loans and leases [Member] | Cash flow hedging [Member]
        
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) 17,337 14,027 (46,526) 4,031
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) 3,078 13,428 11,367 (13,285)
Investment securities [Member] | Interest and fee income investment securities [Member] | Cash flow hedging [Member]
        
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 (702)
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) 7 0 202 0
Deposits [Member] | Interest expense deposits [Member]
        
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 (336) (417) (3,650) (852)
Deposits [Member] | Interest expense deposits [Member] | Cash flow hedging [Member]
        
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 0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) 0 0 0 0
Subordinated notes | Interest expense subordinated notes and other long term debt [Member]
        
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 (2,358) 2,448 (34,378) 8,207
Subordinated notes | Interest expense subordinated notes and other long term debt [Member] | Cash flow hedging [Member]
        
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 0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) 0 (130) 0 (143)
Other long-term debt | Interest expense subordinated notes and other long term debt [Member]
        
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 466 205 (1,106) 489
Other long-term debt | Interest expense subordinated notes and other long term debt [Member] | Cash flow hedging [Member]
        
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 0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) $ 0 $ 0 $ 0 $ 0