Annual report pursuant to Section 13 and 15(d)

Revolving Credit Facilities (Details)

v3.8.0.1
Revolving Credit Facilities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Short-term Debt [Line Items]    
Revolving credit facilities $ 20,000 $ 70,000
Weighted average borrowing rate 5.14% 4.53%
Weighted average remaining maturity 351 days 306 days
Mortgage servicing rights, at fair value, pledged as collateral for borrowings $ 584,247 $ 180,948
Short-term Debt [Member]    
Short-term Debt [Line Items]    
Mortgage servicing rights, at fair value, pledged as collateral for borrowings $ 159,506 $ 180,948