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Guarantees (Narrative) (Details) (USD $)
 3 Months Ended 3 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Mar. 31, 2014
Loan with recourse [Member]
Dec. 31, 2013
Loan with recourse [Member]
Mar. 31, 2014
Loan serviced under representation warranties [Member]
Dec. 31, 2013
Loan serviced under representation warranties [Member]
Mar. 31, 2014
Financial Guarantee Member
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       $ 118,200,000 $ 122,300,000      
Repurchased Loan       1,600,000   2,800,000 12,500,000  
Valuation Allowances And Reserves Balance         2,000,000     1,500,000
Gain (Loss) on repurchase loan subject to credit recourse 50,000 25,000            
Gain (Loss) On Repurchase Loan Not Subject To Credit Recourse 434,000 2,000            
Funds Advanced To Investors Under Servicing Agreements 323,000   243,000          
Two Years Or Less Recourse Obligation Termination Amount $ 86,500,000              
Percentage of Future Extinguished Recourse Obligation Terminated in Two Years Or Less 73.00%