Quarterly report pursuant to Section 13 or 15(d)

Schedule of Mortgage Servicing Rights Sensitivity Analysis of Fair Value (Details)

v3.8.0.1
Schedule of Mortgage Servicing Rights Sensitivity Analysis of Fair Value (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Disclosures Pertaining to Servicing Assets and Servicing Liabilities [Abstract]      
Weighted average prepayment speed: 8.10% 9.80%  
Impact on fair value of 10% adverse change $ (38,597)   $ (40,100)
Impact on fair value of 20% adverse change $ (75,373)   (77,483)
Weighted average delinquency: 1.80% 1.70%  
Impact on fair value of 10% adverse change $ (5,161)   (4,274)
Impact on fair value of 20% adverse change $ (10,712)   (8,875)
Weighted average discount rate: 10.40% 9.90%  
Impact on fair value of 10% adverse change $ (44,278)   (35,137)
Impact on fair value of 20% adverse change $ (85,824)   $ (68,246)