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Fair Value (Details) - USD ($)
$ in Millions
Sep. 30, 2015
Dec. 31, 2014
Fair Value (Details) [Line Items]    
Total amount of loans being serviced for the benefit of others at the end of the period $ 232.2 $ 220.4
Minimum    
Fair Value (Details) [Line Items]    
Appraisal adjustment (percent) 0.00%  
Maximum    
Fair Value (Details) [Line Items]    
Appraisal adjustment (percent) 15.00%