Mortgage Servicing Rights and Mortgage Servicing Activity Mortgage Servicing Rights and Mortgage Servicing Activity-Changes in Key Economic Assumptions (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
Changes in Key Assumptions [Abstract]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor Servicing Assets or Liabilities Impact of Two Hundred Basis Point Adverse Change in Discount Rate	$ 1,352	$ 1,352
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate		9.89%
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor Servicing Assets or Liabilities Impact of Hundred Basis Point Adverse Change in Discount Rate	699	699
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed		10.876%
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Weighted Average Life	101 months 15 days
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Adverse Change in Prepayment Speed	$ 753	$ 753