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Fair Value of Financial Instruments (Servicing Rights) (Details)
12 Months Ended
Dec. 31, 2015
Weighted Average  
Servicing Assets at Fair Value [Line Items]  
Discount rate 30.00%
Cost of service 0.09%
Renewal rate 53.21%
Default rate 10.00%
Minimum  
Servicing Assets at Fair Value [Line Items]  
Renewal rate 31.78%
Default rate 6.43%
Maximum  
Servicing Assets at Fair Value [Line Items]  
Renewal rate 53.21%
Default rate 10.36%