Quarterly report pursuant to Section 13 or 15(d)

Fair Value, Quantitative Information about Level 3 Fair Value Measurements (Details)

v3.5.0.2
Fair Value, Quantitative Information about Level 3 Fair Value Measurements (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Jun. 30, 2016
Sep. 30, 2015
Jun. 30, 2015
Dec. 31, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Mortgage servicing rights, at fair value $ 455,629 $ 493,688 $ 427,813 $ 447,345 $ 437,576 $ 452,006
Fair Value Measurements, Valuation Processes, Description Discounted cash flow          
Fair Value Inputs, Prepayment Rate 15.80% 11.80%        
Fair Value Inputs, Probability of Default 2.10% 4.00%        
Fair Value Inputs, Discount Rate 9.00% 10.10%        
Minimum [Member]            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Fair Value Inputs, Prepayment Rate 13.60%          
Fair Value Inputs, Probability of Default 2.00%          
Fair Value Inputs, Discount Rate 8.20%          
Maximum [Member]            
Fair Value Inputs, Assets, Quantitative Information [Line Items]            
Fair Value Inputs, Prepayment Rate 18.50%          
Fair Value Inputs, Probability of Default 2.20%          
Fair Value Inputs, Discount Rate 9.80%