Quarterly report pursuant to Section 13 or 15(d)

Fair Values of Assets and Liabilities (Fair value option-changes in fair value) (Details 4)

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Fair Values of Assets and Liabilities (Fair value option-changes in fair value) (Details 4) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mortgages Held For Sale
   
Fair Value, Option, Quantitative Disclosures [Line Items]    
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ (4,895) $ 6,073
Automobile Loans
   
Fair Value, Option, Quantitative Disclosures [Line Items]    
Fair Value, Option, Changes in Fair Value, Gain (Loss) (93) (2,511)
Fair Value, Option, Credit Risk, Gains (Losses) on Assets 566 107
Securitization Trust Notes Payable
   
Fair Value, Option, Quantitative Disclosures [Line Items]    
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ (1,344) $ (2,249)