XML 99 R78.htm IDEA: XBRL DOCUMENT v3.19.1
Intangible Assets - FV Assumptions (Details) - Mortgage servicing rights (MSRs)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Assumptions used in estimating the fair value of mortgage service rights    
Weighted average constant prepayment rate 8.87% 9.73%
Weighted average note rate 3.95% 3.85%
Weighted average discount rate 10.28% 10.09%
Weighted average expected life (in years) 6 years 3 months 18 days 5 years 10 months 24 days