Fair Value Accounting (Details 2)	6 Months Ended
	Jun. 30, 2013
Other investments [Member]
Schedule of unobservable inputs used in the fair value measurements
Valuation Technique	Carrying Value
Significant Unobservable Inputs	None
Impaired loans [Member]
Schedule of unobservable inputs used in the fair value measurements
Valuation Technique	Appraised Value/ Discounted Cash Flows
Significant Unobservable Inputs	Appraisals and/or sales of comparable properties
Other real estate owned [Member]
Schedule of unobservable inputs used in the fair value measurements
Valuation Technique	Appraised Value/ Comparable Sales
Significant Unobservable Inputs	Appraisals and/or sales of comparable properties/ Independent quotes