Accounting Policies and Basis of Presentation Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 Branches	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Maximum Period Of Fair Value Refinement After Transaction Closing Date	1 year
Securities Sold under Agreements to Repurchase	$ 97,000,000	$ 111,900,000
Number of Stores	397
Impaired Loans and Leases, Baseline for Meaurement	$ 500,000
Class A Common Stock
Property, Plant and Equipment [Line Items]
Votes per share of common stock	1
Class B Common Stock
Property, Plant and Equipment [Line Items]
Votes per share of common stock	16
Building [Member] | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	25 years
Building [Member] | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Furniture and Fixtures [Member] | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Furniture and Fixtures [Member] | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years