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 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
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) $ 17,714 $ (53,511) $ 19,537 $ (63,849)
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) 813 4,459 3,705 8,485
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 (9,948) 1,175 (3,474) 1,572
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 (3,015) 23,899 (4,081) 32,020
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 228 1,557 494 3,304
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) 17,714 (53,511) 19,537 (63,849)
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) 895 4,374 3,787 8,290
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 0
Amount of gain or (loss) reclassified from accumulated OCI into earnings (effective portion) (82) 85 (82) 195
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 (238) (1,560) (505) (3,314)
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 3,015 (23,899) 4,081 (32,020)
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 0 0 0
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 10,303 (1,175) 6,252 (1,572)
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