Annual report pursuant to Section 13 and 15(d)

Subordinated Notes (Details)

v2.4.0.8
Subordinated Notes (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount $ 312,894  
Subordinated Debt 1,100,860 1,197,091
Subordinated Notes Due 2013 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 0 49,892
Debt Instrument, Interest Rate, Effective Percentage 6.21%  
Debt Instrument, Maturity Date Dec. 31, 2013  
Subordinated Notes Due 2020 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 323,856 350,656
Debt Instrument, Interest Rate, Effective Percentage 7.00%  
Debt Instrument, Maturity Date Dec. 31, 2020  
Junior Subordianted Debentures Due 2027 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 111,816 111,816
Debt Instrument, Interest Rate, Effective Percentage 0.94%  
Debt Instrument, Maturity Date Dec. 31, 2027  
Junior Subordinated Debentures Due 2028 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 54,593 54,593
Debt Instrument, Interest Rate, Effective Percentage 0.87%  
Debt Instrument, Maturity Date Dec. 31, 2028  
Junior Subordinated Debentures Due 2029 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 0 0
Junior Subordinated Debentures Due 2030 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 0 0
Junior Subordinated Debentures Due 2033 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 0 0
Junior Subordinated Debentures Due 2033 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 0 0
Junior Subordinated Debentures Due 2036 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 72,165 72,165
Debt Instrument, Interest Rate, Effective Percentage 1.65%  
Debt Instrument, Maturity Date Dec. 31, 2036  
Junior Subordinated Debentures Due 2036 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 74,320 74,320
Debt Instrument, Interest Rate, Effective Percentage 1.65%  
Debt Instrument, Maturity Date Dec. 31, 2036  
Junior Subordinated Debentures Due 2067 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 0 0
Subordinated Notes Due 2012 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 0 0
Subordinated Notes Due 2014 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 125,109 130,186
Debt Instrument, Interest Rate, Effective Percentage 5.00%  
Debt Instrument, Maturity Date Dec. 31, 2014  
Subordinated Notes Due 2016 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 108,038 110,321
Debt Instrument, Interest Rate, Effective Percentage 5.59%  
Debt Instrument, Maturity Date Dec. 31, 2016  
Subordinated Notes Due 2018 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount 143,749 150,219
Debt Instrument, Interest Rate, Effective Percentage 6.67%  
Debt Instrument, Maturity Date Dec. 31, 2018  
Subordinated Notes Due 2019 [Member]
   
Debt Instrument [Line Items]    
Debt Instrument, Carrying Amount $ 87,214 $ 92,923
Debt Instrument, Interest Rate, Effective Percentage 5.45%  
Debt Instrument, Maturity Date Dec. 31, 2019