Annual report pursuant to Section 13 and 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
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Mortgages Held For Sale
     
Fair Value, Option, Quantitative Disclosures [Line Items]      
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ (12,711) $ 4,284 $ 13,842
Automobile Loans
     
Fair Value, Option, Quantitative Disclosures [Line Items]      
Fair Value, Option, Changes in Fair Value, Gain (Loss) (360) (1,231) (6,577)
Fair Value, Option, Credit Risk, Gains (Losses) on Assets 2,207 2,749 6,610
Securitization Trust Notes Payable
     
Fair Value, Option, Quantitative Disclosures [Line Items]      
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ 0 $ (2,023) $ (7,731)