XML 63 R52.htm IDEA: XBRL DOCUMENT v3.4.0.3
Loan Sales and Servicing - Valuation Assumptions (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Servicing Assets at Fair Value [Line Items]    
Fair value of MSRs $ 40,717 $ 44,541
Composition of residential loans serviced for others, percentage 100.00% 100.00%
Weighted average life (in years) 4 years 7 months 6 days 5 years 4 months 28 days
Prepayment speed: 10.70% 12.40%
Effect on fair value of a 10% increase $ (1,747) $ (1,547)
Effect on fair value of a 20% increase $ (3,351) $ (2,987)
Weighted average option adjusted spread: 8.10% 9.00%
Effect on fair value of a 10% increase $ (1,358) $ (1,504)
Effect on fair value of a 20% increase $ (2,363) $ (2,911)
Fixed rate mortgage loan    
Servicing Assets at Fair Value [Line Items]    
Composition of residential loans serviced for others, percentage 96.90% 96.80%
Adjustable rate mortgage loan    
Servicing Assets at Fair Value [Line Items]    
Composition of residential loans serviced for others, percentage 3.10% 3.20%