Fair Value Measurements (Details 3) (Recurring, Level 3 Fair Value Measurements, Mortgage servicing rights)	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012
Recurring \| Level 3 Fair Value Measurements \| Mortgage servicing rights
Quantitative Information
Weighted average constant prepayment rate (as a percent)	16.02%	18.13%
Weighted average discount rate (as a percent)	8.05%	8.04%

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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