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Guarantees (Narrative) (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Guarantee Obligations [Line Items]        
Qualitative And Quantitative Information Assets Or Liabilities For Transferors Continuing Involvement In Securitization Or Asset backed Financing Arrangement Principal Amounts Outstanding $ 98,400,000 $ 98,400,000   $ 122,300,000
Repurchased Loan not subject to credit recourse 1,900,000 5,600,000    
Repurchase loan subject to credit recourse 115,000 261,000    
Gain (Loss) On Repurchase Loan Not Subject To Credit Recourse 979,000 1,900,000 477,000  
Funds Advanced To Investors Under Servicing Agreements 319,000 319,000   243,000
Two Years Or Less Recourse Obligation Termination Amount 68,400,000 68,400,000    
Percentage of Future Extinguished Recourse Obligation Terminated in Two Years Or Less 70.00% 70.00%    
Serviced mortgage loans for third parties 1,200,000,000 1,200,000,000    
Loan with recourse [Member]
        
Guarantee Obligations [Line Items]        
Repurchase loan subject to credit recourse $ 4,100,000 $ 9,200,000