Fair Value Measurements (Details 3) (Recurring, Significant Unobservable Inputs (Level 3), Mortgage servicing rights)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Recurring | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights
Quantitative Information
Weighted average constant prepayment rate (as a percent)	10.05%	10.94%
Weighted average discount rate (as a percent)	9.18%	8.56%
Weighted average expected life (in years)	5 years 10 months 24 days	5 years 8 months 12 days