Annual report pursuant to Section 13 and 15(d)

Subordinated Notes (Details Textuals)

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Subordinated Notes (Details Textuals) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Debt Instruments [Abstract]      
Retired Subordinated Notes $ 36,100,000   $ 702,400,000
Trust Preferred Securities Exchanged With Applicable Trust 32,500,000    
Gains (Losses) on Extinguishment of Debt 9,697,000 0 147,442,000
Trust Preferred Securities Expected To Be Exchanged $ 3,000,000